IPC Reform List II contains the IPC codes from the 2006 IPC Reform and subsequent updates that are selectively covered by CAS.
Patent documents from countries not listed here are automatically selected for further examination.
Patent documents with one or more of these IPC codes are automatically selected for coverage if they are issued by the following countries or patent offices:
| No. | CODE | COUNTRY |
|---|---|---|
| 1 | AM | Armenia |
| 2 | AP | African Regional Industrial Property Organisation |
| 3 | AT | Austria |
| 4 | AU | Australia |
| 5 | BA | Bosnia and Herzegovina |
| 6 | BG | Bulgaria |
| 7 | BO | Bolivia |
| 8 | BY | Belarus |
| 9 | CA | Canada |
| 10 | CL | Chile |
| 11 | CN | China, Peoples Republic of |
| 12 | CS | Czechoslovakia |
| 13 | CU | Cuba |
| 14 | CY | Cyprus |
| 15 | CZ | Czech Republic |
| 16 | DE | Germany |
| 17 | DO | Dominican Republic |
| 18 | EA | EAPO (Eurasian Patent Organization) |
| 19 | EC | Ecuador |
| 20 | EG | Egypt |
| 21 | EP | EPO (European Patent Office) |
| 22 | FR | France |
| 23 | GB | United Kingdom |
| 24 | GC | Gulf Cooperation Council |
| 25 | GE | Georgia |
| 26 | GR | Greece |
| 27 | GT | Guatemala |
| 28 | HK | Hong Kong |
| 29 | HN | Honduras |
| 30 | HR | Croatia |
| 31 | HU | Hungary |
| 32 | ID | Indonesia |
| 33 | IE | Ireland |
| 34 | IL | Israel |
| 35 | IN | India |
| 36 | IR | Iran |
| 37 | IS | Iceland |
| 38 | JO | Jordan |
| 39 | JP | Japan |
| 40 | KE | Kenya |
| 41 | KG | Kyrgystan |
| 42 | KR | Korea, Republic of |
| 43 | KZ | Kazakhstan |
| 44 | LT | Lithuania |
| 45 | LU | Luxembourg |
| 46 | LV | Latvia |
| 47 | MA | Morocco |
| 48 | ME | Montenegro |
| 49 | MK | Macedonia |
| 50 | MN | Mongolia |
| 51 | MT | Malta |
| 52 | MW | Malawi |
| 53 | MX | Mexico |
| 54 | MY | Malaysia |
| 55 | NI | Nicaragua |
| 56 | NZ | New Zealand |
| 57 | PA | Panama |
| 58 | PE | Peru |
| 59 | PH | Philippines |
| 60 | PK | Pakistan |
| 61 | PY | Paraguay |
| 62 | RO | Romania |
| 63 | RS | Serbia |
| 64 | RU | Russia |
| 65 | SA | Saudi Arabia |
| 66 | SG | Singapore |
| 67 | SI | Slovenia |
| 68 | SK | Slovakia |
| 69 | SM | San Marino |
| 70 | SU | USSR |
| 71 | SV | EL Salvador |
| 72 | TH | Thailand |
| 73 | TJ | Tajikistan |
| 74 | TN | Tunisia |
| 75 | TT | Trinidad and Tabago |
| 76 | TW | Taiwan |
| 77 | UA | Ukraine |
| 78 | US | United States |
| 79 | UY | Uruguay |
| 80 | UZ | Uzbekistan |
| 81 | VE | Venezuela |
| 82 | VN | Vietnam |
| 83 | WO | WIPO (World Intellectual Property Organization) |
| 84 | YU | Yugoslavia |
| 85 | ZA | South Africa |
| 86 | ZM | Zambia |
| 87 | ZW | Zimbabwe |
| Class/Subclass | Subject Matter | Groups Selectively Covered in CA |
|---|---|---|
| A: HUMAN NECESSITIES | ||
| A01C | Planting, sowing and fertilizing | 1/00-3/00, 14/00, 21/00 |
| A01D | Harvesting; Mowing | 69/12 |
| A01G | Horticulture | all groups |
| A01H | New plants; plant reproduction by tissue culture | all groups |
| A01J | Manufacture of dairy products | 00/00, 5/013, 7/02-7/04, 11/00, 15/00, 25/00,25/11, 27/00-27/02, 99/00 |
| A01K | Animal husbandry | 1/015, 31/00, 43/00, 61/00, 61/10-61/51, 61/54,61/57-61/59, 61/90-61/95, 67/00-67/033, 67/0271, 67/0273,67/0275,67,0276,67/0276, 67/0278,85/00-85/01, 91/00, 91/12, 91/18 |
| A01L | Shoeing of animals | 1/00, 5/00, 15/00 |
| A01M | Catching or trapping of animals | 1/00-1/02, 1/14-1/20, 3/04, 5/06, 29/12, 29/28,99/00 |
| A01N | Biocides, pesticides, herbicides, and plant growth regulators | 00/00-25/34, 63/00-65/48 |
| A01P | Biocidal, pesticidal, herbicidal, and plant growth regulating activity | all groups |
| A21B | Baking equipment | all groups |
| A21C | Dough processing equipment | all groups |
| A21D | Baking additives and preservatives | 00/00-2/00, 2/34-17/00 |
| A22B | Slaughtering | all groups |
| A22C | Processing meat, poultry and fish | all groups |
| A23B | Food preserving; chemical ripening | all groups |
| A23C | Dairy products | all groups |
| A23D | Edible oils or fats, e.g. margarines, cooking oils and shortenings | 00/00-7/00, 7/015-9/00, 9/02-9/06 |
| A23F | Coffee, tea and their substitutes | all groups |
| A23G | Cocoa, chocolate, confectionery, ice cream | all groups |
| A23J | Protein and phosphatide compositions for food | all groups |
| A23K | Fodder | all groups |
| A23L | Miscellaneous food preparation and preservation | 00/00-3/32, 3/3418, 3/3445, 3/3472, 3/3571, 3/3589-3/365, 3/375-3/40, 3/44-35/00 |
| A23N | Apparatus for treating fruits and vegetables | all groups |
| A23P | Shaping or working of foodstuffs | all groups |
| A24B | Manufacture and preparation of tobacco | 00/00, 3/00, 3/12-3/14, 13/00-13/02, 15/02-15/08, 15/167, 15/22-15/24 |
| A24C | Machines for making cigars and cigarettes | 3/00-5/01, 5/46 |
| A24D | Cigars, cigarettes and filters | 00/00, 1/06-1/10, 1/18, 1/22-3/00, 3/06-3/17 |
| A24F | Smokers requisites | 1/32, 40/00, 40/44, 40/70, 42/00-42/10, 42/80 |
| A41B | Shirts, underwear, baby linen and handkerchiefs | 3/10, 3/16, 17/00 |
| A41C | Corsets; brassieres | 1/04 |
| A41D | Outerwear and protective garments | 19/015, 31/00-31/32 |
| A41G | Artificial flowers; wigs; feathers | 00/00, 3/00-5/02, 11/00 |
| A42B | Hats; head coverings | 1/011-1/012, 1/019-1/0195, 3/00, 3/06, 3/10 |
| A42C | Manufacturing of hats | 1/08-2/00 |
| A43B | Footwear features and parts | 1/00, 1/023-1/028, 1/10-1/14, 3/04, 3/08, 9/16-9/20, 13/00-13/04, 13/12, 13/16-13/18, 13/22, 13/32, 13/42, 17/14, 21/00-21/02, 21/04-21/08, 21/14, 21/18-21/20, 21/26, 21/32, 21/47, 21/54, 23/07, 23/16-23/17 |
| A43D | Equipment and methods for footwear repair and manufacture | 87/00, 95/06 |
| A44B | Buttons, pins, and other fasteners | 1/02 |
| A45C | Purses; luggage | 5/02 |
| A45D | Hairdressing and shaving equipment; manicuring and other cosmetic treatment | 00/00-1/00, 4/14, 7/00-7/06, 19/00, 31/00, 33/38, 37/00, 97/00 |
| A46B | Brushes | 3/02-3/04 |
| A46D | Brush manufacture | 1/00-1/045 |
| A47C | Chairs, sofas and beds | 5/00-5/04, 5/12, 7/16-7/20 |
| A47G | Household or table equipment | 25/36 |
| A47H | Furnishings for windows or doors | 23/02, 23/08-23/14 |
| A47J | Kitchen equipment | 36/02-36/04 |
| A47K | Sanitary equipment; toilet accessories | 13/02 |
| A47L | Domestic washing or cleaning | 13/17, 13/19 |
| A61B | Diagnosis, surgery and identification | 00/00-1/00, 5/00, 5/0275-5/028, 5/0515, 5/0537, 5/117, 5/14-5/1486, 5/1495, 5/155-5/157, 5/262-5/27, 6/40, 6/42, 6/46, 6/50, 6/51, 6/58, 10/00, 17/20, 17/42-17/435, 18/00-18/06, 18/14-18/16, 19/02-19/08, 34/00-46/27, 50/30-90/98 |
| A61C | Dentistry; oral or dental hygiene | all groups |
| A61D | Veterinary tools or methods | 9/00, 19/00-19/04 |
| A61F | Prostheses, bandages, dressings, absorbent pads, etc. | 00/00-2/44, 2/82, 2/844-2/97, 5/44-5/441, 5/443, 6/00-6/10, 6/14, 6/20-6/22, 13/00-13/24, 13/36, 13/44, 13/47-13/475, 13/51-13/511, 13/513-13/514, 13/53-13/535, 13/537-13/539, 13/84 |
| A61G | Medical furnishings; funeral devices | 17/007 |
| A61J | Medical or drug containers; devices for administration of drugs | 00/00-1/14, 1/18-3/10 |
| A61K | Medical, dental and toilet preparations | 00/00, 6/15-6/19, 7/00-7/155, 7/26, 7/40-8/18, 8/92-9/10, 9/12-9/26, 9/48-9/54, 9/68-9/72, 35/00-36/9068, 39/00-45/08, 47/46, 48/00-50/00, 125/00-135/00 |
| A61L | Sterilization, disinfection and deodorization | 00/00-9/015, 9/03-15/10, 15/14-15-20, 15/36, 15/40-101/56 |
| A61M | Medical delivery and transduction devices | 00/00-1/00, 1/12-1/38, 5/00, 5/38, 15/00-15/02, 16/10-16/18, 16/22, 29/04-36/00, 36/14-37/00, 60/00, 60/104-60/113, 60/36-60/38, 60/837, 60/843, 60/876, 60/886-60/888, 99/00 |
| A61N | Electrotherapy, magnetotherapy, radiation therapy or ultrasonic therapy | 1/04-1/05, 1/44, 2/10, 5/00 |
| A61P | Therapeutic activity of chemical compounds | all groups |
| A61Q | Use of cosmetics or toiletries | all groups |
| A62B | Life-saving devices and apparatus | 7/00, 7/06-7/10, 15/00-18/06, 19/00-23/06, 29/00, 37/00 |
| A62C | Fire-fighting | 00/00-2/00, 2/10, 3/00, 3/06, 5/00-5/033, 8/06-8/08, 13/02-13/70, 31/00, 31/07-31/12, 39/00, 99/00 |
| A62D | Chemical fire extinguishing agents, protectants against harmful chemicals and materials for breathing apparatus | all groups |
| A63B | Sports equipment | 37/02-37/08, 37/12-37/14, 39/06-39/08, 41/02, 49/10-49/12, 51/02, 53/10-53/12, 59/45, 59/51, 59/54, 60/08 |
| A63C | Skis and skates | 5/056, 5/14 |
| A63D | Bowling games and billiards | 1/04 |
| A99Z | Subject matter not otherwise provided for | all groups |
| B: PERFORMING OPERATIONS; TRANSPORTING | ||
| B01B | Boiling and boiling apparatus | all groups |
| B01D | Separation | 00/00-3/10, 3/14-7/00, 8/00, 13/04, 17/00-53/46, 53/73-53/85, 53/88, 53/92, 53/96-57/02, 61/06-61/12, 61/18-61/34, 61/46-61/54, 63/00-65/04, 65/10-69/14, 159/00 |
| B01F | Mixing, dissolving, emulsifying or dispersing | 00/00-15/06, 21/00-35/95, 101/00, 101/04-101/59 |
| B01J | Chemical or physical processes | 00/00-8/46, 13/00-13/12, 13/20-13/22, 19/00-19/12, 19/18-19/32, 35/20-35/73, 35/80, 47/14-49/90 |
| B01L | Chemical or physical laboratory apparatus | all groups |
| B02B | Grain preparation | 5/00 |
| B02C | Crushing, pulverizing or disintegrating | all groups |
| B03B | Separating solids using liquids | 00/00-1/00, 1/04, 5/00, 5/28-5/46, 5/60-5/66, 7/00-9/04 |
| B03C | Magnetic or electrostatic separation | 00/00-1/025, 1/32-3/04, 3/16-3/30, 3/38, 3/41-3/45, 3/53-3/64, 3/74-3/80, 3/84, 3/88-11/00 |
| B03D | Flotation and differential sedimentation | 00/00-1/001, 1/02-1/14, 3/00-103/10 |
| B04B | Centrifuges | 00/00-1/00, 3/00, 5/00, 5/04-5/08 |
| B04C | Free vortex flow apparatus | 00/00-3/00, 5/00, 7/00 |
| B05B | Spraying and atomizing apparatus | all groups |
| B05C | Apparatus for applying liquids to surfaces | 00/00-1/00, 3/00, 5/00, 7/00, 9/00, 19/00-19/02 |
| B05D | Processes for applying fluent materials to surfaces | all groups |
| B07B | Separating solids from solids | 00/00-1/00, 4/00-7/00, 9/00-9/02, 13/00 |
| B08B | Cleaning and prevention of fouling | 00/00, 3/00-5/00, 6/00-7/00, 7/04-9/02, 9/08, 9/093, 9/40, 11/00, 17/00-17/02 |
| B09B | Solid waste disposal | 00/00, 1/14, 1/40, 1/52, 3/00-5/00, 101/00-101/95 |
| B09C | Reclamation of contaminated soil | 00/00-1/06, 1/10, 101/00 |
| B21B | Rolling of metal | 00/00-1/08, 1/12-1/30, 1/46-3/02, 9/00, 27/06, 28/00-28/04, 99/00 |
| B21C | Manufacture of metal sheet, wire, rods, tubes or profiles | 00/00-1/00, 1/16-1/20, 9/00-9/02, 23/00, 23/22-23/26, 23/32, 35/06-37/00, 99/00 |
| B21D | Working or processing of metal products | 26/053-26/055, 26/08-26/12, 37/01, 37/18 |
| B21F | Working or processing of wire | 19/00-21/00, 99/00 |
| B21J | Forging, hammering, pressing or riveting | 1/00-1/02, 1/06-3/00 |
| B22C | Foundry molding | 00/00, 7/00-9/04, 9/10-9/12, 9/18, 15/268 |
| B22D | Casting of metals | 00/00-1/00, 3/00, 7/00-7/02, 11/00, 11/059, 11/07, 11/10, 11/108-11/113, 11/116-11/119, 13/00, 15/00, 17/00, 18/00-18/06, 19/00-19/10, 19/16-25/00, 25/04-27/00, 27/18-27/20, 41/02, 41/28-41/32, 41/36, 41/44-41/48, 41/52-41/54 |
| B22F | Manufacture and working of metallic powder | 00/00, 1/05-1/18, 3/00-12/90 |
| B23C | Milling | 5/28 |
| B23H | Metal working via electric or electrochemical process | 00/00-1/00, 1/04-3/00, 3/04-7/00, 7/08, 7/12, 7/22-7/24, 7/34-11/00 |
| B23K | Soldering, welding, cladding or plating by applying heat locally | 00/00-1/018, 1/08, 1/19-1/20, 5/00, 5/10-5/16, 5/213, 7/00, 7/08, 9/00-9/013, 9/14-9/18, 9/23-9/26, 10/00-10/02, 11/16-11/20, 11/30, 11/34, 13/00, 13/06, 15/00, 15/10-20/00, 20/14-20/24, 23/00-26/00, 26/066, 26/12-26/211, 26/32-26/352, 26/356, 26/36-26/362, 26/40-26/42, 26/60, 28/00, 31/00-31/02, 31/12, 35/00, 35/04, 35/08-35/10, 35/14, 35/18-35/40, 101/34-101/42 |
| B23P | Metal working | 00/00, 6/00-9/00, 17/00-17/06, 25/00 |
| B24B | Grinding or polishing | 1/00, 5/50, 7/20, 9/02-9/16, 9/20, 19/22, 31/112-31/116, 37/11-37/14, 37/20-37/24, 53/00-53/017, 53/095 |
| B24C | Abrasive blasting | 1/00, 1/04-1/08, 11/00 |
| B24D | Grinding tools | 00/00-5/04, 5/14, 7/00-7/04, 7/14, 7/18, 11/00-11/04, 13/12, 17/00-18/00, 99/00 |
| B25D | Percussive tools | 1/00, 17/26 |
| B25G | Handles | 1/10-1/12 |
| B26B | Cutting tools | 19/40, 21/58-21/60 |
| B27D | Working veneer or plywood | 00/00-1/00, 1/04, 5/00 |
| B27K | Staining, dyeing, impregnation and bleaching of wood and similar materials | 00/00-1/00, 3/00-3/04, 3/08, 3/12, 3/44-3/48, 5/00-9/00 |
| B27L | Debarking | 3/00 |
| B27N | Manufacture of articles from wood-based materials | 00/00-3/14, 5/00-9/00 |
| B28B | Shaping of clay, ceramic or cementitious material | 00/00-1/00, 1/093, 1/14-1/26, 1/30-1/32, 1/54, 7/34-7/40, 7/44, 11/00, 11/04-11/06, 11/22-11/24, 17/02, 19/00-21/04, 21/08, 21/92-21/94 |
| B28C | Preparing clay | 00/00-1/10, 1/20-5/00, 5/40, 9/00-9/02 |
| B28D | Working stone | 5/00 |
| B29B | Processing and recycling of plastics | all groups |
| B29C | Shaping or joining of plastics | all groups |
| B29D | Production of plastic articles | all groups |
| B29K | Molding material indexing scheme associated with processing subclasses B29B, C or D | 00/00, 21/00, 105/00-105/14, 105/20, 105/24-105/34, 503/08 |
| B29L | Indexing scheme associated with subclass B29C | all groups |
| B31B | Making paper or cardboard containers | 50/60-50/66, 50/88, 70/60-70/66, 70/88 |
| B32B | Layered products | 00/00, 5/00-23/18, 25/00-25/12, 29/00-38/00, 38/06-38/18, 43/00 |
| B33Y | Additive manufacturing technology | all groups |
| B41C | Processes for making or reproducing printing surfaces | 00/00-1/00, 1/055-1/06, 1/10-1/12, 1/16, 3/00, 3/04-3/06 |
| B41J | Selective printing mechanisms | 2/005-2/02, 2/135, 2/16, 2/195-2/20, 2/315-2/325, 2/335-2/34, 2/385, 2/425, 2/435, 2/445, 2/46, 2/48, 17/34, 19/12, 27/04, 31/00-31/08 |
| B41K | Stamps; stamping or numbering apparatus | 1/38, 1/50 |
| B41L | Commercial apparatus for printing or duplicating | 1/36 |
| B41M | Printing and copying | 00/00-1/42, 3/12, 5/00-5/128, 5/14, 5/16-5/26, 5/34-5/38, 5/398-7/02, 99/00 |
| B41N | Printing plates or foils; materials for printing machine surfaces | 00/00-1/00, 1/04-1/16, 1/20-6/02, 99/00 |
| B42D | Books | 3/02, 25/00, 25/30, 25/324-25/333, 25/355-25/47, 25/48, 101/00-107/00, 113/00, 119/00 |
| B44C | Producing decorative effects | 00/00-1/00, 1/04, 1/16-1/22 |
| B44D | Painting or artistic drawing; preservation of paintings | 00/00, 5/00-5/08, 5/12-7/00 |
| B60B | Vehicle wheels, castors and axles | 1/08, 3/06, 5/00-5/02, 9/10, 9/16 |
| B60C | Vehicle tires | 00/00-1/00, 7/10, 9/00, 9/12-9/16, 17/00, 17/10-19/12, 99/00 |
| B60J | Vehicle windows, roofs and doors | 10/00, 10/15-10/18, 10/34-10/35 |
| B60R | Vehicles and vehicle parts and fittings | 13/00-13/08, 19/18-19/22, 19/30, 21/217, 21/235, 21/26, 21/264-21/272 |
| B60W | Vehicle control units | 20/15-20/16, 20/18 |
| B62K | Cycles | 19/02-19/06, 19/16 |
| B62M | Rider or powered propulsion of vehicles | 6/80-6/90 |
| B63B | Ships | 5/24, 32/57-32/59, 32/62, 73/40-73/46, 73/70-73/74, 83/40 |
| B63H | Marine propulsion or steering | 11/00, 11/09, 11/12-11/16 |
| B64D | Aircraft equipment | 15/00, 15/06-15/10, 37/30-37/34 |
| B64G | Cosmonautics | 1/46-1/48, 1/54, 1/58, 9/00 |
| B65B | Apparatus and methods for packaging | 00/00-1/00, 1/04, 1/20, 1/28-1/30, 3/00, 3/04, 3/22, 3/26, 31/00, 31/10, 55/00-55/04, 55/08-55/12, 55/16-55/19, 55/22 |
| B65C | Labelling apparatus and processes | 5/00-5/04 |
| B65D | Containers for storage or transport | 00/00-1/00, 1/26-1/28, 5/56, 5/62, 6/00, 8/00, 13/00-13/02, 19/08, 19/18, 19/28, 19/32, 23/02, 23/08, 25/14, 25/34, 27/14-27/18, 30/00-30/04, 33/18-33/22, 35/06-35/08, 39/18, 41/12-41/14, 41/18, 41/24, 41/42-41/44, 41/48, 41/54, 53/00-53/10, 63/02, 63/10, 65/00, 65/38- 65/46, 81/24-81/30, 85/84, 88/26, 88/72, 90/04, 90/30, 90/34, 90/38-90/44 |
| B65F | Gathering or removal of domestic refuse | 7/00 |
| B65G | Transport or storage devices | 3/00-3/04, 15/32-15/34, 15/38, 47/58, 47/62, 53/00, 53/04-53/30, 69/00-69/02, 69/06, 69/10-69/12, 69/18-69/20 |
| B65H | Handling of thin or filamentary material | 71/00 |
| B67B | Opening or closing containers | 1/03 |
| B67C | Liquid filling or emptying of containers | 3/10 |
| B67D | Dispensing liquids | 5/00-7/06, 7/32, 7/36, 7/42-7/48, 7/52-7/54, 7/58-7/82, 9/00-9/02, 99/00 |
| B68G | Methods and equipment in upholstery | 1/00-3/02, 5/00-5/02, 11/00-11/02, 11/04 |
| B81B | Microstructural devices or systems | all groups |
| B81C | Manufacture or treatment of microstructural devices or systems | all groups |
| B82Y | Application, analysis and treatment of nanostructures | all groups |
| B99Z | Subject matter not otherwise provided for | all groups |
| C: CHEMISTRY; METALLURGY | ||
| C02F | Treatment of water, wastewater, sewage or sludge | 00/00-1/26, 1/30-1/40, 1/48, 1/74, 3/00-3/34, 7/00-9/06, 9/10-11/131, 11/143-103/44 |
| C03B | Manufacture, shaping or supplementary processes for glass, mineral or slag wool | 00/00-7/22, 9/00-37/012, 37/02-40/04 |
| C03C | Chemical compositions and surface treatment of glass, mineral or slag wool | 19/00, 25/10-25/226, 25/50-25/64, 25/68-29/00 |
| C04B | Lime, magnesia, cements, ceramics, and refractories | 7/36-7/52, 18/00-20/12, 111/00, 111/30-111/94 |
| C05F | Organic fertilizers | all groups |
| C05G | Fertilizer mixtures | 3/20-3/90, 5/10-5/40 |
| C06B | Explosives or thermic compositions | 00/00, 21/00 |
| C06C | Detonating or priming devices, fuses, chemical lighters and pyrophoric compositions | 00/00-9/00 |
| C06F | Matches and their manufacture | 00/00-1/26, 3/06, 5/00-5/04 |
| C09H | Preparation of glue or gelatin | 1/00-1/04, 9/00-9/04 |
| C09J | Adhesives | 5/00-7/50 |
| C09K | Materials for miscellaneous applications | 3/00-3/32, 15/34-17/00, 17/04, 17/10, 17/32-17/34, 17/52, 101/00-109/00 |
| C10B | Destructive distillation of carbonaceous materials | all groups |
| C10C | Work-up of tar, pitch, asphalt or bitumen | 00/00-1/06, 1/14-1/19, 3/00, 3/06-3/18 |
| C10F | Work-up or drying of peat | all groups |
| C10G | Petrochemistry | 7/12, 9/04, 9/08-9/32, 9/40-9/42, 21/30, 71/02, 99/00 |
| C10J | Production of fuel gases | 00/00, 3/22-3/44, 3/50-3/52, 3/72-3/86 |
| C10L | Fuels | 5/42-5/48, 11/06-11/08 |
| C10N | Indexing scheme associated with subclass C10M | 20/06, 40/00-40/25, 40/30-50/10 |
| C11C | Fatty acids and chemical modification of fats, oils or fatty acids | 5/00-5/02 |
| C11D | Detergent compositions and soaps | 13/10-13/28, 17/00-17/08 |
| C12C | Brewing of beer | all groups |
| C12F | Recovery of byproducts of fermented solutions | 3/06-3/10 |
| C12G | Wine and other alcoholic beverages | 00/00-1/02, 1/024-1/036, 1/06-1/09, 1/14-3/10, 3/14 |
| C12H | Pasteurization, sterilization, preservation, purification, etc., of alcoholic beverages | 00/00-1/02, 1/06-1/08, 1/12, 1/16-1/22, 6/00-6/04 |
| C12J | Vinegar and its preparation | 1/08 |
| C12L | Pitching or depitching machines | all groups |
| C12M | Apparatus for enzymology or microbiology | all groups |
| C12N | Microorganisms and enzymes | 00/00-1/06, 1/10, 1/12, 1/14, 1/16-1/18, 1/20, 1/34-1/36, 3/00-5/095, 7/00, 7/02-7/04, 7/08, 13/00 |
| C12Q | Enzyme- and microorganism-based measuring or testing methods | 00/00-1/24, 1/64, 1/70-3/00 |
| C12R | Indexing scheme associated with subclasses C12C to C12Q or C12S | all groups |
| C12S | Enzyme- and microorganism-based processes for liberation, separation or purification of compounds | 00/00, 3/00, 3/06, 3/10-3/12, 3/22-3/24, 7/00-13/00, 99/00 |
| C13B | Sucrose production and apparatus | all groups |
| C13C | Cutting mills; pulp presses | all groups |
| C13D | Production or purification of sugar juices | 00/00-1/14 |
| C13F | Preparation or processing of raw sugar, sugar or syrup | all groups |
| C13G | Evaporation apparatus; boiling pans | all groups |
| C13H | Cutting machines for sugar | all groups |
| C14B | Mechanical treatment or processing of leather | all groups |
| C21B | Manufacture or iron and steel | 00/00, 3/08-3/10, 5/06-13/14 |
| C21C | Processing or pig iron | 00/00-1/00, 1/06-5/04, 5/28-5/35, 5/38-5/52, 5/56-7/00, 7/10 |
| C21D | Metallurgy of ferrous metals | 00/00-1/55, 1/62-1/70, 1/767-1/84, 5/02, 7/00-11/00 |
| C22B | Production and refining of ferrous and nonferrous metals | 1/26, 9/193 |
| C22C | Alloys | 47/12, 47/20 |
| C23C | Coating and surface treatment of metallic materials | 00/00, 1/02-1/10, 2/14-4/02, 4/12-7/00, 13/00-13/12, 14/50-14/52, 14/56, 16/50-16/517, 17/00-17/02 |
| C23D | Enamelling or vitreous layer application to metals | 00/00, 9/00-9/10, 13/00-17/00 |
| C23F | Surface treatment or corrosion and incrustation inhibition of metallic materials | 1/08, 13/18-13/22 |
| C23G | Chemical cleaning or degreasing of metallic materials | 3/00-3/04 |
| C25B | Electrolytic or electrophoretic processes for production of compounds or nonmetals | 00/00, 9/00-9/05, 9/07, 9/09, 9/13, 9/15, 9/17-9/77, 15/00-15/06 |
| C25C | Electrolytic production, recovery or refining of metals | 3/08-3/10, 3/14-3/16, 3/20-3/22, 7/00-7/06 |
| C25D | Electrolytic and electrophoretic processes for production of coatings and electroforming | 00/00-1/10, 2/00, 7/00-7/12, 13/12-13/16, 13/22, 17/00-17/28, 21/00-21/10, 21/12 |
| C25F | Electrolytic removal of materials from objects | 7/00-7/02 |
| C30B | Crystal growth | 13/14-13/32, 15/06-15/36, 19/06-21/06, 23/04-23/06, 25/08-27/02, 29/60-30/08, 31/10-35/00 |
| C99Z | Subject matter not otherwise provided | all groups |
| D: TEXTILES; PAPER | ||
| D01B | Mechanical treatment of natural fibers | all groups |
| D01C | Chemical treatment of natural filamentary or fibrous material to obtain filaments or fibers for spinning | 1/04 |
| D01D | Manufacture of artificial filaments | all groups |
| D01F | Chemical features in manufacture of artificial fibers and filaments | 9/133, 9/32 |
| D01G | Pretreatment of fibers | all groups |
| D01H | Spinning or twisting | all groups |
| D02G | Crimping or curling of fibers | all groups |
| D02H | Warping, beaming or leasing | all groups |
| D02J | Finishing of filaments | all groups |
| D03C | Shedding mechanisms; pattern cards | all groups |
| D03D | Woven fabrics; weaving methods; looms | all groups |
| D03J | Auxiliary weaving apparatus | all groups |
| D04B | Knitting | all groups |
| D04C | Braiding; lace manufacture | all groups |
| D04D | Trimmings; ribbons; tapes; bands | all groups |
| D04G | Making nets by knitting | all groups |
| D04H | Making of textile fabrics | all groups |
| D05B | Sewing | all groups |
| D05C | Embroidering; tufting | all groups |
| D06B | Treatment of textiles by liquids, gases or vapors | all groups |
| D06C | Finishing of textiles | all groups |
| D06F | Laundering; drying; ironing; pressing | all groups |
| D06G | Mechanical or pressure cleaning of carpets | all groups |
| D06H | Marking or severing of textiles | all groups |
| D06J | Textile pleating, kilting or goffering | all groups |
| D06M | Miscellaneous textile and fiber treatment | 10/00-10/02, 11/84, 13/52-13/54, 15/70-15/72, 23/00-23/18 |
| D06N | Covering materials for walls, floors and roofs | 1/00, 3/16, 5/00-7/06 |
| D06P | Dyeing or printing of textiles, leathers, furs or macromolecular materials | 5/20 |
| D06Q | Decoration of textiles | all groups |
| D07B | Ropes or cables | all groups |
| D21B | Fibrous raw materials | all groups |
| D21C | Cellulose production and pulping liquor regeneration | 1/10, 3/22-9/08, 9/18 |
| D21D | Material treatment prior to the papermaking machine | all groups |
| D21F | Papermaking machines | all groups |
| D21G | Calenders | all groups |
| D21H | Pulp compositions and impregnating or coating of paper | 11/08-11/18, 15/00-17/02, 19/00-19/08, 19/72-19/78, 19/84-21/12, 21/40-27/42 |
| D21J | Fiberboard | all groups |
| D99Z | Subject matter not otherwise provided for | all groups |
| E: FIXED CONSTRUCTIONS | ||
| E01B | Permanent way | 3/28, 3/44-3/46, 7/26, 11/46-11/52, 31/12-31/20, 31/24 |
| E01C | Road construction or surfaces | 00/00, 3/00-9/00, 9/04-11/12, 11/16-11/20, 11/24-15/00, 19/00-19/02, 19/08-19/12, 19/16, 21/00-21/02 |
| E01D | Bridges | 19/08, 101/00-101/40 |
| E01F | Road signs, markings, fences | 9/50-9/524, 9/576-9/582 |
| E01H | Street cleaning | 3/00, 5/00, 8/00-8/04, 8/10, 10/00-15/00 |
| E02B | Hydraulic engineering; foundations | 3/16, 15/04-15/10 |
| E02D | Foundations | 1/00-3/001, 3/054, 3/10-3/12, 5/04, 5/10, 5/18-5/20, 5/28-5/30, 5/46, 5/62-5/64, 15/00-15/06, 17/20-19/00, 19/06, 19/16-19/20, 23/14, 27/26, 27/32-27/52, 29/09, 29/16-31/14, 37/00 |
| E03B | Water distribution methods and networks | 00/00-3/02, 3/04-3/36, 7/00 |
| E03C | Domestic plumbing | 1/046, 1/10 |
| E03D | Water-closets or urinals | 1/01, 9/02, 9/10-9/12 |
| E03F | Sewers; cesspools | 3/04, 5/14-5/18, 5/24 |
| E04B | General building construction | 00/00-1/16, 1/20, 1/22-1/30, 1/62-1/98, 2/10, 2/20, 2/24-2/26, 2/34, 2/38-2/40, 2/48, 2/52-2/54, 2/92-2/94, 5/32, 5/44, 7/22, 103/00-103/06 |
| E04C | Structural elements and building materials | 00/00-2/296, 3/00, 3/04, 3/20, 3/26-3/293, 3/32-3/36, 3/40, 3/44-5/07, 5/18-5/20 |
| E04D | Roof coverings | 00/00-1/22, 3/00-3/35, 5/00-5/10, 7/00-11/02 |
| E04F | Finishing work on buildings | 10/02, 11/104-11/17, 13/00-13/02, 13/12-13/18, 15/00, 15/04-15/12 |
| E04G | Scaffolding forms | 9/04-9/06, 21/00-21/02, 21/32, 23/02 |
| E04H | Buildings or like structures | 4/10, 7/00-7/30, 12/02, 12/08, 12/12 |
| E05B | Locks; keys; door fittings | 15/16, 19/26 |
| E05G | Safes or strong rooms | 1/12-1/14 |
| E06B | Doors; windows; shutters | 1/12, 1/24-1/26, 1/32, 1/58, 3/08, 3/12, 3/18-3/20, 3/54-3/56, 3/76-3/78, 3/86, 5/06-5/08, 5/12-5/18, 7/22-7/232 |
| E21B | Earth drilling; recovery of oil, gas, water, soluble materials or mineral slurries from wells | 00/00, 10/22, 10/24-10/25, 21/00-21/01, 21/06-21/08, 21/14-21/16, 25/08, 29/02, 33/00-33/02, 33/10-33/12, 33/13, 33/138-33/14, 35/00, 37/00, 37/06-37/08, 41/00, 43/00, 43/1185, 43/12-43/295, 43/32-43/40, 47/0005, 47/047-47/053, 47/11, 49/00, 49/08-49/10 |
| E21C | Mining or quarrying | 35/22, 37/00, 37/06, 37/12-37/20, 37/26, 41/00-41/32, 50/00, 51/00 |
| E21D | Shafts; tunnels; galleries | 1/10, 1/16, 5/00-5/012, 5/04-5/06, 5/11, 11/00, 11/04, 11/38 |
| E21F | Mine safety devices | 00/00, 5/00-7/00, 17/00 |
| E99Z | Subject matter not otherwise covered | all groups |
| F: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING | ||
| F01B | Positive-displacement machines or engines | 31/02, 31/08-31/10, 31/16 |
| F01C | Rotary-piston or oscillating-piston machines or engines | 19/00-19/12, 21/04-21/06 |
| F01D | Non-positive displacement machines or engines | 5/28, 11/00-11/12, 17/00-17/02, 17/08, 21/10, 21/14, 25/02, 25/08, 25/12, 25/22 |
| F01K | Steam engine plants | 5/00-5/02, 17/00-19/00, 25/00-27/02 |
| F01L | Cyclically operating valves for machines | 3/02-3/04, 3/12-3/18, 7/16 |
| F01M | Lubricating of machines or engines | 00/00, 3/00-9/04, 9/08-9/12, 11/08-11/10 |
| F01N | Gas-flow silencers or exhaust apparatus for machines or engines | 00/00, 1/04, 1/10, 1/24-3/28, 5/00-5/02, 7/00, 7/14-7/16, 9/00-13/20, 99/00 |
| F01P | Cooling of machines or engines | 00/00-1/00, 3/00, 3/22, 7/14, 9/00-9/02, 9/06, 11/06 |
| F02B | Internal-combustion piston engines | 1/06, 1/10, 1/14, 3/04, 3/08, 3/12, 5/02, 7/04, 7/08, 9/04, 13/10, 27/00-27/06, 39/14, 43/02-43/04, 43/08-45/02, 45/06-47/10, 51/00-53/02, 53/12, 55/00, 57/00, 59/00, 69/00-69/04, 75/08-75/12, 77/00-77/04, 77/11-77/13 |
| F02C | Gas-turbine plants; jet-propulsion plants | 1/00-1/04, 1/06-3/00, 3/20-3/30, 3/34-5/00, 5/06, 5/10, 6/04-6/06, 6/10, 7/12-7/141, 7/16-7/18, 7/24-7/25, 7/264, 7/30, 9/40 |
| F02D | Controlling combustion engines | 00/00, 19/00-21/06, 33/00-35/02 |
| F02F | Cylinder, pistons or casings for combustion engines | 1/12, 3/16-3/18, 3/22 |
| F02K | Jet-propulsion plants | 9/00-9/22, 9/26, 9/42, 9/70-9/72 |
| F02M | Fuel supply of combustion engines | 7/16-7/17, 17/40, 25/00-27/08, 37/24-37/54, 99/00 |
| F02N | Starting of combustion engines and aids | 19/00-19/10, 99/00 |
| F02P | Ignition | 23/00-23/04 |
| F03D | Wind motors | 9/11, 9/14, 9/17-9/19 |
| F03G | Spring, weight or inertia motors | 1/02-1/04, 4/00-4/06, 6/00-7/10 |
| F03H | Producing a reactive propulsive thrust | all groups |
| F04B | Pumps; positive displacement machines for liquids | 15/00-15/08, 37/00-37/14, 39/02-39/04, 53/18 |
| F04C | Rotary-piston or oscillating-piston machines and pumps | 25/02, 27/02, 29/02 |
| F04D | Non-positive displacement pumps | 7/00-7/08, 19/04, 29/02, 29/06-29/08 |
| F04F | Pumping of fluid by direct contact of another fluid or by inertia | 1/14-1/16, 5/36-5/40, 9/00-9/02, 9/06 |
| F15B | Systems acting by means of fluids | 21/04-21/06 |
| F15C | Fluid circuit elements for computing or control | 1/06 |
| F15D | Fluid dynamics | 1/00-1/02 |
| F16B | Devices for fastening or securing | 2/22-2/26, 33/06 |
| F16C | Shafts; bearings; rotary bodies | 1/24, 3/14, 27/06, 33/00-33/24, 33/44, 33/56, 33/62-33/78 |
| F16D | Clutches; brakes; couplings for transmitting rotation | 3/19, 3/56-3/58, 3/66-3/68, 3/74, 3/77, 3/79, 13/74, 69/00-69/04 |
| F16F | Springs; shock absorbers | 1/02, 1/36, 1/366, 1/37, 3/02, 3/08-3/093, 15/06, 15/08, 15/121, 15/124, 15/133, 15/136, 15/305 |
| F16G | Belts, cables or ropes | 1/04-1/16, 5/04-5/14, 9/04 |
| F16H | Gearing | 15/01, 41/32, 55/06, 55/48, 57/032, 59/72, 61/50 |
| F16J | Pistons; cylinders; pressure vessels | 1/01-1/02, 9/26-9/28, 15/00-15/16, 15/20, 15/28-15/30, 15/328-15/3292, 15/38-15/40, 15/44-15/453, 15/54-15/56 |
| F16K | Valves; taps; cocks | 1/32, 1/44, 3/30, 3/36, 5/08, 5/22, 17/00, 25/00, 25/04-27/06, 27/08-27/12, 99/00 |
| F16L | Pipes; general means for thermal insulation | 9/00, 9/02-9/16, 9/21, 11/00-11/20, 11/24-11/26, 13/02, 13/08-13/12, 17/067-17/08, 23/026, 23/032, 23/16-23/24, 26/032, 27/06-27/067, 33/34, 47/00-47/03, 47/20-47/24, 53/00-53/75, 55/164-55/1645, 55/175, 58/00-59/02, 101/00, 101/10-101/18 |
| F16N | Lubricating | 00/00, 15/00-17/06, 35/00, 39/00-99/00 |
| F17C | Vessels for storing or containing compressed, liquified or solidified gases | 00/00-13/02, 13/10-13/12 |
| F17D | Pipelines and systems | 1/00-1/05, 1/08-3/18 |
| F21H | Incandescent mantles | all groups |
| F21K | Light sources | 00/00-5/12, 5/18, 7/00, 9/00, 9/60-99/00 |
| F21V | Features or details of lighting devices | 00/00, 1/14-3/00, 3/04-3/12, 5/10, 7/22-9/45, 15/01, 15/06, 29/00, 29/15, 29/51-29/56, 29/58-29/60, 29/70, 29/85-29/89, 31/04, 37/00, 99/00 |
| F21Y | Light source form, kind or color | 115/00-115/30 |
| F22B | Steam generation; steam boilers | 00/00-1/06, 1/16-1/22, 1/30-3/08, 37/04, 37/48 |
| F22G | Superheating of steam | 1/12-1/14 |
| F23B | Solid-fuel combustion apparatus and methods | 00/00, 10/00-10/02, 30/00-30/02, 40/00, 50/00, 60/00, 70/00-80/02, 90/00-99/00 |
| F23C | Fluent-fuel combustion apparatus | 00/00-1/12, 9/00-101/00 |
| F23D | Burners | 00/00-1/00, 3/00, 5/00, 7/00-11/00, 14/00, 14/18, 14/80, 17/00, 21/00, 99/00 |
| F23G | Waste incineration | 00/00, 5/00-5/027, 5/12-5/18, 5/30, 5/48, 7/00-7/14 |
| F23J | Removal or treatment of combustion products or residues | 00/00-1/00, 1/08-3/00, 3/04-9/00, 13/02, 15/00-15/04, 99/00 |
| F23K | Fuel feeding to combustion apparatus | 1/00-1/02, 5/08-5/12 |
| F23M | Constructional details of combustion chambers | 5/00 |
| F23N | Regulation or control of combustion | 00/00, 5/00-5/14, 5/24-5/26 |
| F23Q | Ignition | 00/00, 2/30, 2/44-2/48, 11/00-13/00 |
| F23R | Generation of high pressure or high velocity combustion products | 3/40 |
| F24D | Domestic- or space-heating systems | 101/00, 101/30-101/60, 103/00-103/17 |
| F24F | Air conditioning | 1/0071-1/0087, 1/0328-1/037, 3/12, 3/16-5/00, 7/003, 8/00-8/99, 110/50-110/76 |
| F24H | Fluid heaters | 9/40-9/45, 15/136-15/14, 15/288 |
| F24J | Production or use of heat | 00/00-1/04, 2/28, 2/34, 2/42, 2/46-2/51, 3/00, 3/08 |
| F24S | Solar heat collectors and systems | 00/00, 10/00-20/00, 21/00, 40/00, 40/40, 40/46-40/50, 60/00-80/70 |
| F24V | Heat collection, production or use | all groups |
| F25B | Refrigeration plants, machines or systems | 00/00, 9/00-9/14, 15/00-17/02, 17/08-25/02, 30/00-30/04, 35/00-37/00, 41/10-41/22, 41/26-41/31, 41/32-41/39, 43/00-43/04, 47/00 |
| F25D | Refrigerators; cooling or freezing apparatus | 5/00-5/02 |
| F25J | Liquefaction, solidification or separation of gases by pressure and cold treatment | all groups |
| F26B | Drying solid materials | all groups |
| F27B | Furnaces, kilns, ovens or retorts | 00/00-1/00, 3/00, 5/00, 7/00, 14/00, 15/00, 17/00-17/02 |
| F27D | Details of kilns, furnaces and retorts | 00/00-1/10, 1/16, 7/00-7/02, 7/06, 23/00, 27/00, 99/00 |
| F28B | Steam or vapor condensers | all groups |
| F28C | Direct-contact heat exchangers | all groups |
| F28D | Other heat exchangers | 00/00-13/00, 15/06-21/00 |
| F28F | Details of heat-exchange or heat-transfer apparatus | 00/00-21/00, 21/04, 23/00-99/00 |
| F28G | Surface cleaning of heat exchangers | all groups |
| F41A | Features of small arms and ordnance | 1/00-1/04, 21/00-21/04, 21/20-21/22, 29/04, 99/00 |
| F41H | Armor | 00/00-1/08, 5/00-5/007, 5/02-5/08, 9/00-9/10, 11/12-11/138, 13/00 |
| F41J | Targets | 00/00-1/01, 5/24-5/26 |
| F42B | Explosive charges | 00/00-1/04, 3/10, 3/107-3/11, 3/13, 3/185, 3/192-3/195, 3/24, 3/28-4/00, 4/30, 5/145-5/15, 5/16-5/18, 5/188-5/196, 5/26-5/28, 5/295-5/313, 7/06, 8/16, 12/00, 12/36-12/50, 12/70-12/82, 14/04, 15/34, 19/20, 23/08, 23/14, 33/00-33/10, 33/14, 39/14-39/18, 99/00 |
| F42C | Ammunition fuses | 00/00, 9/08-9/12, 11/02, 15/30-15/31, 15/36-15/38, 19/08-19/09, 99/00 |
| F42D | Blasting | 1/24-1/28 |
| F99Z | Subject matter not otherwise provided for | all groups |
| G: PHYSICS | ||
| G01B | Measurement of length, thickness or linear dimensions | 1/00 |
| G01D | Measuring not adapted for a specific variable | 15/06, 15/10-15/16, 15/20, 15/34 |
| G01F | Measuring volume, flow or level | 00/00-1/52, 1/56-1/58, 1/64-1/68, 1/708-3/00, 11/00, 13/00, 15/14, 17/00, 22/00 |
| G01J | Measurement of properties of IR, visible or UV radiation | 00/00-1/02, 1/38, 1/42-1/54, 1/58, 3/00-3/51, 4/00 |
| G01K | Measurement of temperature | 00/00, 1/08-1/12, 5/00-5/02, 5/12, 5/28, 5/32, 5/48, 5/64-5/66, 5/70, 7/00-7/08, 7/18, 7/22, 7/26, 7/32-7/36, 7/40, 11/00-11/20, 11/30-13/08, 13/12-13/25, 17/00-17/04, 19/00 |
| G01L | Measuring force, stress, torque, or work | 7/00, 11/00, 21/00, 23/00 |
| G01M | Testing static or dynamic balance | 3/00, 3/20-3/22, 15/00-15/05, 15/10 |
| G01N | Analyzing materials by determining their chemical and physical properties | 00/00-1/02, 1/10, 1/14-1/44, 3/28, 3/40, 3/56-3/60, 5/00-7/20, 9/00-9/06, 9/24-11/08, 11/14, 13/00-15/04, 15/06-19/04, 19/10-21/359, 21/39-21/552, 21/59-21/85, 21/88-21/89, 21/90-21/95, 21/958-22/00, 22/04-23/12, 23/20-25/58, 25/62-25/64, 25/70, 27/00-27/18, 27/22, 27/26-27/60, 27/62-27/78, 27/92-29/036, 30/00-30/96, 33/00-33/14, 33/18-33/48, 33/554-33/559, 33/569-33/571, 33/574-33/579, 35/00-37/00 |
| G01Q | Scanning-probe methods and apparatus; applications | all groups |
| G01R | Measurement of electric and magnetic variables | 13/00, 13/12-13/16, 22/02-22/04, 33/00, 33/12-33/20, 33/28-33/30, 33/32, 33/44-33/50, 33/60-33/64 |
| G01T | Measurement of nuclear or x-radiation | 00/00-1/10, 1/11-1/142, 1/16-1/163, 1/167-1/17, 1/178-1/205, 1/22-7/06 |
| G01V | Geophysics | 5/00-5/14, 9/00, 11/00 |
| G02B | Optical elements, systems or apparatus | 00/00-3/00, 5/00, 5/08, 5/18-6/036, 6/10-6/122, 6/13-6/27, 6/293, 21/00, 21/33, 26/00 |
| G02F | Optical devices | all groups |
| G03C | Photosensitive materials and processes in photography | 00/00, 1/025, 1/74, 1/765, 1/78-1/785, 1/805-1/81, 1/91, 1/95-5/18, 5/28-5/29, 5/60, 7/04-7/24, 7/46, 8/30, 8/34, 8/40-8/50, 9/00-11/24 |
| G03F | Photomechanical production of textured or patterned surfaces | 00/00-7/00, 7/09-7/18, 7/26-7/42 |
| G03G | Electrography and electrophotography | 00/00-5/05, 5/082-5/087, 5/10-5/16, 13/00-21/00, 21/04-21/10 |
| G03H | Holographic processes or apparatus | 00/00-1/12, 1/18, 3/00-5/00 |
| G04B | Mechanical clocks and watches | 19/12, 19/32, 31/004-31/016, 31/08, 37/02, 37/22-39/02 |
| G04F | Time-interval measuring | 5/14-5/16 |
| G05B | Control or regulating systems | all groups |
| G05D | Control systems for non-electric variables | all groups |
| G05F | Systems for regulating electric or magnetic variables | all groups |
| G05G | Control devices or systems characterized by mechanical features | all groups |
| G06F | Electric digital data processing | 00/00, 17/00, 19/00-19/28 |
| G06G | Analog computers | 7/48, 7/54-7/58, 7/75 |
| G06K | Data recognition; record carriers | 19/02 |
| G06N | Computing arrangements based on specific models | 10/00, 10/40 |
| G07D | Sorting, testing, or changing currency | 7/00-7/06, 7/12-7/15, 7/187 |
| G08B | Signaling or calling systems | 17/00, 17/08-17/11, 17/117-17/12, 21/00, 21/12-21/16 |
| G09B | Educational or demonstration devices | 23/00, 23/06, 23/12, 23/16-23/20, 23/24-23/28 |
| G09F | Displaying; signs; labels | 9/305-9/35, 13/20-13/22 |
| G09G | Control of indicating devices | 3/08, 3/12-3/14, 3/18-3/19, 3/24, 3/28-3/2813, 3/30-3/38 |
| G10D | Stringed musical instruments | 3/22, 9/08, 13/24 |
| G10K | Sound-producing devices | 11/162-11/168 |
| G11B | Information storage | 00/00, 3/68-3/70, 5/00-5/02, 5/10, 5/11-5/235, 5/255-5/41, 5/62-5/858, 7/00-7/013, 7/123-7/125, 7/127-7/128, 7/131, 7/1353-7/1376, 7/1384, 7/22-11/14, 11/18-13/08 |
| G11C | Static stores | 11/00-11/06, 11/14-11/18, 11/21-11/28, 11/34-11/38, 11/40, 11/404, 11/42-11/46, 11/54-15/06, 17/00-17/16, 19/00-19/02, 19/08, 19/14-19/32, 19/36 |
| G12B | Details of instruments | 21/00-21/08 |
| G16B | Bioinformatics | all groups |
| G16C | Computational chemistry and materials science | all groups |
| G16H | Healthcare informatics | 00/00-10/00, 10/40, 20/00-20/17, 20/90, 50/00-50/70 |
| G16Y | Information and communication technology for IOT | 10/25, 10/60, 10/90, 40/10-40/20 |
| G16Z | Other information and communication technology | all groups |
| G21B | Fusion reactors | all groups |
| G21C | Nuclear reactors | 00/00-3/40, 5/00-19/40, 21/00-23/00 |
| G21D | Nuclear power plant | all groups |
| G21F | Radiation protection; decontamination | all groups |
| G21G | Conversion of chemical elements and radioactive sources | 4/00-7/00 |
| G21H | Energy from radioactive sources | all groups |
| G21J | Nuclear explosives | all groups |
| G21K | Techniques for handling of particles or radiation | all groups |
| G99Z | Subject matter not otherwise provided for | all groups |
| H: ELECTRICITY | ||
| H01B | Cables, conductors, insulators and dielectrics | 00/00, 5/00, 5/14-5/16, 7/17-7/22, 7/28-7/295, 9/00-9/02, 12/00-12/14, 13/00-13/016, 13/06-13/16, 13/22-13/26, 13/30-13/32, 15/00-17/00, 17/30-17/36, 17/50, 17/56-19/04 |
| H01C | Resistors | 00/00, 7/00-7/105, 7/12-7/13, 7/12-7/22, 10/00-10/02, 11/00-13/00, 17/00-17/30 |
| H01F | Magnetic materials and inductors | 00/00, 1/03, 5/00, 6/00-7/02, 7/128, 10/06, 10/32, 27/00-27/02, 27/08-27/255, 27/32, 27/36, 41/00-41/079, 41/12-41/34 |
| H01G | Capacitors | 00/00, 2/10, 4/00-4/224, 4/33, 5/00-5/014, 5/20-5/28, 7/00-9/02, 9/04, 9/048-9/058, 9/07-9/08, 9/145-9/155, 9/20-13/00, 13/04-17/00 |
| H01H | Electric switches | 00/00-1/10, 1/66, 3/62, 9/00-9/04, 9/30-9/36, 11/00-11/06, 13/04-13/06, 13/10, 13/70-13/704, 13/78-13/785, 19/04-19/08, 21/04, 21/08, 21/12, 23/04-23/08, 29/00, 29/04-29/06, 33/04-33/10, 33/22, 33/57, 33/66, 33/664, 33/76, 33/82, 33/84, 33/867, 33/91, 33/92, 33/95-33/96, 33/985-33/99, 69/00, 69/02, 71/16-71/20, 85/00, 85/04-85/041, 85/05-85/08, 85/11, 85/143, 85/165-85/17, 85/18-85/20, 85/38-85/43, 87/00 |
| H01J | Electric discharge tubes or discharge lamps | 00/00-1/05, 1/12-1/14, 1/15-1/74, 1/78-1/90, 3/40, 5/04-5/10, 5/20-5/30, 7/00-7/12, 7/18-7/20, 7/28, 7/40, 9/00-9/04, 9/08, 9/12-9/14, 9/20-9/24, 9/28-9/30, 9/38-9/395, 9/42, 9/50-11/02, 11/10-11/54-13/08, 13/16, 13/22, 13/26-13/28, 15/00-15/02, 17/00-17/12, 17/18-17/26, 17/32, 17/38, 17/49-17/50, 19/00-19/06, 19/08, 19/12-19/20, 19/24-19/36, 19/40-19/44, 19/50, 19/54-19/58, 19/68-19/70, 21/00-21/02, 21/20, 23/02, 23/04-23/05, 27/00-27/08, 27/14-27/16, 27/20-29/32, 29/36-29/39, 29/44, 29/48, 29/84-29/86, 29/88, 29/94, 31/00, 31/08, 33/00, 35/00-35/08, 35/20, 37/00-37/06, 37/073-37/09, 37/244, 37/252, 37/26-37/295, 37/317-40/06, 40/10, 40/16-40/18, 41/00-43/04, 43/22, 45/00-47/12, 49/00-49/18, 49/26-49/30, 49/34-49/36, 49/40-61/12, 61/24-61/28, 61/35, 61/38-61/50, 61/54, 61/58-61/64, 61/70-61/76, 61/80, 61/98-99/00 |
| H01K | Electric incandescent lamps | 00/00-1/12, 1/18-1/20, 1/26-1/28, 1/32, 1/40, 1/50-1/56, 3/02, 3/22 |
| H01L | Semiconductor devices | all groups |
| H01M | Processes or means (e.g., batteries) for direct conversion of chemical energy into electrical energy | 00/00-4/12, 4/14-4/23, 4/62-4/84, 6/02, 6/08-6/12, 6/22, 6/30-8/04992, 8/24-16/00, 50/00-50/77 |
| H01P | Waveguides | 00/00-1/00, 1/08-1/11, 1/14-1/16, 1/165, 1/18-1/185, 1/20-1/207, 1/215-1/23, 3/00, 3/10-3/12, 3/14-3/18, 7/00, 7/10, 11/00 |
| H01Q | Aerials | 1/00, 1/38-1/40, 15/08, 19/09 |
| H01R | Electrically conductive connections | 00/00-4/04, 4/22, 4/58-4/64, 4/68-4/72, 13/00-13/03, 13/46-13/50, 13/52, 13/527-13/533, 13/6474, 13/6477, 13/658-13/6581, 13/6583-13/6585, 13/6598-13/6599, 13/7193, 39/18-39/26, 39/30, 43/06, 43/10-43/12 |
| H01S | Lasers; devices using stimulated emission | 00/00-3/067, 3/08-3/0805, 3/09-3/10, 3/102-3/115, 3/13-3/134, 3/14-5/00, 5/02218-5/02235, 5/0232, 5/02345-5/0237, 5/028-5/068, 5/0687-5/50 |
| H01T | Spark gaps; corona devices | 00/00-1/02, 1/08-1/10, 1/18-1/24, 13/00-13/02, 13/06-13/08, 13/14, 13/20, 13/38-13/39, 13/41, 19/00, 23/00 |
| H02B | Boards, substations or switching arrangements | 1/26-1/28, 5/06, 7/01, 11/04, 13/055 |
| H02K | Dynamo-electric machines | 1/02-1/04, 3/02, 3/30, 3/44, 5/02, 15/10-15/12, 44/08-44/10 |
| H02N | Electric machines not otherwise provided for | 3/00-6/00, 11/00 |
| H02S | Generation of electric power via photovoltaic modules | 00/00-10/40, 20/26, 40/00-40/10, 40/20-40/22, 40/38-99/00 |
| H03H | Impedance networks; resonance | 9/00-9/02, 9/15-9/25, 9/46, 9/54-9/58, 9/62-9/64 |
| H05B | Electric heating; electric lighting | 00/00, 3/03-3/04, 3/08-3/14, 3/18, 7/00-7/09, 7/16-7/22, 31/00-31/02, 31/06-31/16, 33/00-33/04, 33/10-35/00 |
| H05F | Static electricity | 1/00-1/02 |
| H05G | X-ray technique | 00/00-1/00, 2/00-7/22 |
| H05H | Plasma technique; production of charged particles, neutrons or atomic or molecular beams | 00/00-1/02, 1/08, 1/12, 1/24-1/26, 1/34, 1/54-6/00, 9/00-15/00 |
| H05K | Printed circuits; manufacture of electric component assemblies | 00/00-3/18, 3/22-3/46, 9/00 |
| H10B | Electronic memory devices | all groups |
| H10K | Organic electric solid-state devices | all groups |
| H10N | Other solid-state electric devices | all groups |
| H99Z | Subject matter not otherwise provided for | all groups |