This list has the IPC codes from the 7th edition of the IPC manual that have been used by CAS for selective coverage. Patent documents that have one or more of these IPC codes are automatically selected for further examination.
| A: HUMAN NECESSITIES | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| A01C | Planting, sowing and fertilizing | 1/00, 1/06, 1/08, 3/00 |
| A01G | Horticulture | 7/02, 7/06 |
| A01H | New plants; plant reproduction by tissue culture | 1/00, 1/06, 1/08, 3/00, 3/04 |
| A01J | Manufacture of dairy products | 27/00, 27/02 |
| A01M | Catching or trapping of animals | 1/20 |
| A01N | Biocides, pesticides, herbicides, and plant growth regulators | 00/00-25/34, 63/00-65/00 |
| A21D | Baking additives and preservatives | 00/00-2/00, 2/40 |
| A23B | Food preserving; chemical ripening 4/10-4/24, 5/00, 5/025, 5/05, 5/06-5/18, 7/00, 7/022, 7/05, 7/08-7/10, 7/14-7/157, 7/16-9/00, 9/14-9/30 | 00/00-4/00, 4/02-4/027, 4/033, 4/048, 4/08 |
| A23C | Dairy products | 00/00, 1/16, 3/00, 3/08-9/00, 9/12-9/158, 9/20-13/10, 13/16-15/00, 15/16-19/02, 19/032-19/06, 19/08-19/084, 19/097-19/14, 20/00-23/00 |
| A23D | Edible oils or fats, e.g. margarines, cooking oils and shortenings | 00/00-7/00, 7/015-7/04, 7/06-9/00, 9/02-9/04, 9/06 |
| A23F | Coffee, tea and their substitutes | 00/00-3/10, 3/14-3/20, 3/34-5/00, 5/14-5/26, 5/40-5/50 |
| A23G | Cocoa, chocolate, confectionery, ice cream | 00/00-1/02, 3/00, 3/32 |
| A23J | Protein and phosphatide compositions for food | 00/00-1/08, 1/10-1/20, 3/00-3/22, 3/28-7/00 |
| A23K | Fodder | 00/00-1/00, 1/165-1/22, 3/00-3/04 |
| A23L | Miscellaneous food preparation and preservation | 00/00-1/00, 1/015, 1/03-1/105, 1/186, 1/19-1/212, 1/218-1/222, 1/226-1/237, 1/27-1/31, 1/314, 1/318, 1/325, 1/328, 2/00, 2/38-2/39, 2/40-2/44, 2/52-2/70, 2/74-3/00, 3/3571, 3/375 |
| A23P | Shaping or working of foodstuffs | 1/02, 1/04, 1/08, 1/16 |
| A24B | Manufacture and preparation of tobacco | 00/00, 3/00, 3/12, 15/24 |
| A24D | Cigars, cigarettes and filters | 00/00, 3/00, 3/06-3/16 |
| A41B | Shirts, underwear, baby linen and handkerchiefs | 3/10, 17/00 |
| A41D | Outerwear and protective garments | 19/015, 31/00, 31/02 |
| A42C | Manufacturing of hats | 01/08 |
| A43B | Footwear features and parts | 1/00, 1/10-1/14, 13/00-13/04, 13/12, 13/22, 13/42, 21/00-21/02, 21/04-21/08, 21/14, 21/18-21/20, 23/16-23/17 |
| A44B | Buttons, pins, and other fasteners | 01/02 |
| A45D | Hairdressing and shaving equipment; manicuring and other cosmetic treatment | 4/14, 7/04, 7/06, 31/00, 33/38, 37/00 |
| A46B | Brushes | 3/02, 3/04 |
| A46D | Brush manufacture | 1/00 |
| A47C | Chairs, sofas and beds | 5/12 |
| A47G | Household or table equipment | 25/36 |
| A47H | Furnishings for windows or doors | 23/02, 23/08-23/10, 23/14 |
| A47J | Kitchen equipment | 36/02, 36/04 |
| A47K | Sanitary equipment; toilet accessories | 13/02 |
| A61B | Diagnosis, surgery and identification | 5/145, 18/06 |
| A61C | Dentistry; oral or dental hygiene | 5/08-5/11, 13/00-13/03, 13/08-13/09, 13/20-13/23, 13/263, 13/34 |
| A61D | Veterinary tools or methods | 9/00 |
| A61F | Prostheses, bandages, dressings, absorbent pads, etc. | 2/00, 2/02, 2/10-2/14, 2/30, 13/00-13/04, 13/15-13/20, 13/36, 13/47-13/475, 13/51-13/511, 13/513-13/514, 13/53-13/535, 13/537, 13/84, 101/00-105/00 |
| A61G | Medical furnishings; funereal devices | 17/007 |
| A61J | Medical or drug containers; devices for administration of drugs | 1/00-1/10, 1/14, 1/18, 3/00-3/10 |
| A61K | Medical, dental and toilet preparations | 00/00, 7/00-7/155, 7/26, 7/40-9/10, 9/12-9/26, 9/48-9/54, 9/68-9/72, 35/00-35/06, 39/00-45/08, 48/00-49/22 |
| A61L | Sterilization, disinfection and deodorization | 00/00-2/02, 2/03, 2/14-2/238, 9/00-9/012, 9/014-9/05, 9/14, 9/22-12/00, 12/08-15/10, 15/14-15/20, 15/40-15/54, 15/58-27/36, 27/40-33/18, 101/00-101/54 |
| A61M | Medical delivery and transduction devices | 1/14-1/38, 16/10-16/14, 16/22, 29/04-36/00, 36/14-37/00 |
| A61N | Electrotherapy, magnetotherapy, radiation therapy or ultrasonic therapy | 1/04-1/05, 2/10 |
| A61P | Therapeutic activity of chemical compounds | all groups |
| A62B | Life-saving devices and apparatus | 17/00-17/04, 18/00-18/06, 19/00-21/00, 29/00 |
| A62C | Fire-fighting | 3/00, 3/06, 5/00-5/033, 13/02-13/22, 13/66-13/70 |
| 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, 49/10, 51/02, 53/10 |
| A63C | Skis and skates | 5/056, 5/14 |
| A63D | Bowling games and billiards | 01/04 |
| B: PERFORMING OPERATIONS; TRANSPORTING | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| B01B | Boiling and boiling apparatus | 00/00-1/04, 1/08 |
| B01D | Separation | 00/00-1/00, 1/14-1/28, 3/00-3/10, 3/14-7/00, 8/00, 17/00-17/025, 17/032-21/02, 21/08, 24/00-24/02, 24/28, 24/36, 25/00-25/12, 25/22-25/28, 27/00-27/04, 29/00, 33/00, 35/00-35/02, 35/04, 35/10, 36/00-45/00, 46/00-46/04, 46/10, 46/18, 46/24, 46/28-46/30, 46/38-46/40, 46/52-47/06, 47/10-47/16, 49/00-51/06, 51/10-53/46, 53/73-53/83, 53/85, 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, 101/00-101/02 |
| B01F | Mixing, dissolving, emulsifying or dispersing | 00/00-5/12, 5/18, 5/24-7/02, 7/16, 9/00-9/02, 9/10, 11/00, 13/00-13/10 |
| B01J | Chemical or physical processes | 00/00-8/46, 13/00-13/12, 13/20-13/22, 19/00-19/08, 19/20-19/32, 47/14-49/02 |
| B01L | Chemical or physical laboratory apparatus | 00/00, 3/00-7/02, 11/00-11/02 |
| B03C | Magnetic or electrostatic separation | 1/015, 3/00-3/01, 3/013-3/019, 3/28-3/30, 3/38, 3/41-3/43, 3/53-3/64, 3/78, 3/84, 5/00-9/00 |
| B03D | Flotation and differential sedimentation | 00/00-1/001, 1/02-1/14, 3/00-3/02, 3/06, 101/00-103/10 |
| B04B | Centrifuges | 00/00-1/00, 3/00, 5/00, 5/04-5/08 |
| B05D | Processes for applying fluent materials to surfaces | 00/00, 3/00-3/10, 5/00-7/26 |
| B07B | Separating solids from solids | 4/00, 7/00, 9/00 |
| B08B | Cleaning andprevention of fouling | 03/08 |
| B09B | Solid waste disposal | 00/00, 3/00-5/00 |
| B09C | Reclamation of contaminated soil | 1/00-1/06, 1/10, 101/00 |
| B21B | Rolling of metal | 3/00-3/02, 27/06 |
| B21C | Manufacture of metal sheet, wire, rods, tubes or profiles | 23/32 |
| B21D | Working or processing of metal products | 26/08-26/12 |
| B21F | Working or processing of wire | 19/00 |
| B21J | Forging, hammering, pressing or riveting | 3/00 |
| B22C | Foundry molding | 00/00, 9/10-9/12, 15/268 |
| B22D | Casting of metals | 00/00-1/00, 21/00-23/00, 23/04-23/10, 27/00, 27/18-27/20 |
| B22F | Manufacture and working of metallic powder | 00/00, 7/00-9/00, 9/12, 9/16-9/30 |
| B23H | Metal working via electric or electrochemical process | 00/00, 1/06-1/08, 3/00, 3/04-5/02, 5/06-5/14, 7/22-7/24, 7/34, 7/38, 11/00 |
| B23K | Soldering, welding, cladding or plating by applying heat locally | 00/00-1/00, 1/012-1/018, 1/08, 1/19-1/20, 5/12-5/16, 7/00, 7/08, 9/00, 9/14-9/173, 9/23-9/26, 10/00-10/02, 11/16-11/20, 11/30, 11/34, 17/00, 20/14-20/18, 20/20-20/24, 23/00-25/00, 26/12, 26/18-26/20, 26/42, 28/00, 31/00, 31/12, 35/00, 35/10, 35/20-35/40 |
| B23P | Metal working | 17/00, 127/04, 25/00 |
| B24B | Grinding or polishing | 1/00 |
| B24C | Abrasive blasting | 1/00, 1/04-1/06 |
| B24D | Grinding tools | 3/00-3/34 |
| B25G | Handles | 1/10, 1/12 |
| B26B | Cutting tools | 21/58, 21/60 |
| B27K | Staining, dyeing, impregnation and bleaching of wood and similar materials | 00/00, 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 | 00/00-3/06, 5/00-9/00 |
| B28B | Shaping of clay, ceramic or cementitious material | 1/00, 1/16, 1/24-1/26, 1/30-1/32, 1/54, 7/34-7/40, 7/44, 11/04-11/06, 11/24, 17/02, 19/00, 21/92-21/94 |
| B28C | Preparing clay | 1/00-1/06, 3/00-5/00, 5/40 |
| B29B | Processing and recycling of plastics | 7/00, 7/84, 7/88-9/16, 11/14, 11/16, 13/00, 13/08, 15/00-15/02, 15/08-17/02 |
| B29C | Shaping or joining of plastics | 33/38-33/40, 33/52-33/68, 35/00-35/10, 35/18, 45/46, 45/70, 45/83, 47/36, 47/94, 49/46, 49/66, 59/08-59/16, 65/40, 65/48, 65/52, 67/02-67/06, 67/24, 70/02-70/16, 70/26, 70/58-70/66, 70/88-73/02, 73/10, 73/16-73/18, 73/22 |
| B29D | Production of plastic articles | 7/00-9/00, 17/00, 30/04, 30/38-30/40, 30/52 |
| B29K | Molding material indexing scheme associated with processing subclasses B29B, C or D | 21/00, 105/00-105/06, 105/24 |
| B29L | Indexing scheme associated with subclass B29C | 7/00, 9/00, 17/00, 30/00 |
| B32B | Layered products | 00/00, 9/00-23/18, 25/00-25/12, 29/00-29/08 |
| B41J | Selective printing mechanisms | 2/005-2/015, 2/195-2/20, 2/315, 2/385, 2/435, 2/445, 2/48, 31/00-31/08 |
| B41M | Printing and copying | 00/00-1/42, 5/00-5/128, 5/165-5/26, 5/34-7/02 |
| B41N | Printing plates or foils; materials for printing machine surfaces | 00/00, 1/00, 1/04-1/08, 1/12, 3/03, 3/06, 6/00-6/02 |
| B42D | Books | 3/02, 101/00-107/00, 113/00, 119/00 |
| B44C | Producing decorative effects | 1/00, 1/04, 1/16-1/20 |
| B44D | Painting or artistic drawing; preservation of paintings | 00/00, 5/00, 7/00 |
| B60B | Vehicle wheels, castors, and axles | 5/00, 5/02, 9/10 |
| B60C | Vehicle tires | 1/00, 17/10 |
| B62K | Cycles | 19/02-19/06, 19/16 |
| B63B | Ships | 5/24 |
| B65H | Handling of thin or filamentary material | 71/00 |
| B81B | Microstructural devices or systems | all groups |
| B81C | Manufacture or treatment of microstructural devices or systems | all groups |
| C: CHEMISTRY; METALLURGY | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| C02F | Treatment of water, wastewater, sewage or sludge | 00/00-1/26, 1/30-1/40, 1/48, 1/74, 3/00-3/34, 9/00-9/06, 9/10-11/12, 11/16-11/20, 101/00-103/44 |
| C03B | Manufacture, shaping or supplementary processes for glass, mineral or slag wool | 5/42-5/43, 18/18-18/20, 19/12-20/00, 27/008-27/012, 27/02-27/04, 37/00-37/012, 37/023, 37/027, 37/075, 40/00-40/02, 40/033-40/04 |
| C03C | Chemical compositions and surface treatment of glass, mineral or slag wool | 25/10-25/22, 25/50-25/64, 25/68-25/70, 27/00-29/00 |
| C04B | Lime, magnesia, cements, ceramics, and refractories | 7/36-7/52, 18/00-20/12, 111/34-111/94 |
| C06B | Explosives or thermic compositions | 00/00 |
| C06C | Detonating or priming devices, fuses, chemical lighters and pyrophoric compositions | 00/00-5/04, 7/00-9/00 |
| C06F | Matches and their manufacture | 00/00 |
| C09H | Preparation of glue or gelatin | 1/00-1/04, 9/00-9/04 |
| C09J | Adhesives | 5/00-7/04 |
| C09K | Materials for miscellaneous applications | 3/00-3/32, 15/34-17/00, 17/04, 17/10, 17/32-17/34, 101/00-109/00 |
| C10B | Destructive distillation of carbonaceous materials | 00/00, 47/00-57/18 |
| C10C | Work-up of tar, pitch, asphalt or bitumen | 00/00-1/06, 1/14-1/19, 3/00, 3/06-3/18 |
| C10G | Petrochemistry | 7/12, 9/04, 9/08-9/32, 9/40-9/42, 21/30, 71/02 |
| C10J | Production of fuel gases | 00/00, 3/30 |
| C10N | Indexing scheme associated with subclass C10M | 20/06, 40/00-40/25, 40/30-50/10 |
| C12C | Brewing of beer | 00/00-1/02, 1/047, 1/125, 1/16-3/00, 3/04, 3/08-7/04, 7/14, 11/00-12/04 |
| C12F | Recovery of byproducts of fermented solutions | 3/06-3/10 |
| C12G | Wine and other alcoholic beverages | 00/00-1/02, 1/024-1/032, 1/06-1/08, 3/00-3/06, 3/08-3/10, 3/14 |
| C12H | Pasteurization, sterilization, preservation, purification, etc., of alcoholic beverages | 00/00-1/02, 1/12, 1/22 |
| C12J | Vinegar and its preparation | 01/08 |
| C12M | Apparatus for enzymology or microbiology | 00/00-1/20, 1/40-1/42 |
| C12N | Microorganisms and enzymes | 00/00-1/00, 1/10, 1/12, 1/14, 1/16-1/18, 1/20, 1/34, 5/00-5/08, 7/00, 7/02-7/04, 13/00 |
| C12Q | Enzyme- and microorganism-based measuring or testing methods | 00/00-1/20, 1/64, 1/70, 3/00 |
| C12R | Indexing scheme associated with subclasses C12C to C12Q or C12S | 1/91-1/92 |
| 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 |
| C13D | Production or purification of sugar juices | 00/00-1/04, 1/08-1/10, 1/14 |
| C13F | Preparation or or processing of raw sugar, sugar or syrup | 00/00-3/00 |
| C13G | Evaporation apparatus; boiling pans | 00/00-1/00 |
| C21B | Manufacture or iron and steel | 00/00, 5/06, 11/00-13/14 |
| C21C | Processing or pig iron | 00/00-1/00, 1/08-5/04, 5/28-5/35, 5/38-5/40, 5/44, 5/52, 5/56-7/00, 7/10 |
| C21D | Metallurgy of ferrous metals | 00/00, 5/02 |
| C22C | Alloys | 47/12, 47/20 |
| C23C | Coating and surface treatment of metallic materials | 00/00, 2/26-2/30, 4/00-4/02, 4/12-6/00, 14/56, 16/50-16/517 |
| C23D | Enamelling or vitreous layer application to metals | 00/00, 13/00-17/00 |
| C25B | Electrolytic orelectrophoretic processes for production of compounds or nonmetals | 00/00, 9/18, 9/20 |
| C25D | Electrolytic andelectrophoretic processes for production of coatings and electroforming | 00/00-1/10, 2/00 |
| C25F | Electrolytic removal of materials from objects | 07/02 |
| C30B | Crystal growth | 15/06-15/36, 19/06-21/06, 23/04-23/06, 25/08-27/02, 29/60-30/08, 31/10-35/00 |
| D: TEXTILES; PAPER | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| D01D | Manufacture of artificial filaments | 1/00-1/02, 1/10, 5/00-5/08, 5/096-5/14, 5/38-5/40, 10/00-10/02, 10/06, 11/06 |
| D01F | Chemical features in manufacture of artificial fibers and filaments | 9/133, 9/32 |
| D01H | Spinning or twisting | 13/30 |
| D02J | Finishing of filaments | 3/18 |
| D04H | Making of textile fabrics | 00/00-1/00, 1/04-1/14, 1/40, 1/50, 1/54-1/60, 1/64, 1/68, 3/00, 3/08, 3/12-3/16, 5/00, 5/04-5/06 |
| D06B | Treatment of textiles 0 by liquids, gases or vapors | 00/00, 7/00-9/06, 11/00-15/00, 19/0 |
| D06C | Finishing of textiles | 7/00-7/04, 27/00, 29/00 |
| D06H | Marking or severing of textiles | 7/22 |
| D06M | Miscellaneous textile and fiber treatment | 10/00-10/02, 11/84, 13/52-13/535, 15/70-15/715, 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 | 00/00-1/08, 1/12-1/14 |
| D07B | Ropes or cables | 05/08 |
| D21B | Fibrous raw materials | 1/00-1/02, 1/14-1/16, 1/30-1/32, 1/38 |
| D21C | Cellulose production and pulping liquor regeneration | 1/10, 3/22-7/00, 9/00-9/08, 9/18 |
| D21F | Papermaking machines | 1/66, 1/70, 1/82 |
| D21H | Pulp compositions and impregnating or coating of paper | 11/08-11/18, 17/00-17/02, 19/00-19/08, 19/72-19/78, 19/84-21/12, 21/40-23/32, 23/76, 25/00-25/06, 27/00-27/04, 27/08-27/18, 27/28, 27/32-27/38 |
| D21J | Fiberboard | 1/00, 1/08-1/20 |
| E: FIXED CONSTRUCTIONS | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| E01C | Road construction or surfaces | 7/00, 7/06-7/12, 7/18-7/30, 7/35, 13/00, 13/06-13/10 |
| E01D | Bridges | 101/20, 101/24-101/26, 101/30-101/40 |
| E01H | Street cleaning | 3/00, 5/00, 8/00, 8/10, 10/00-13/00 |
| E02D | Foundations | 3/00, 3/11, 3/12, 5/46, 19/16, 27/26 |
| E03B | Water distribution methods and networks | 3/18, 3/22 |
| E04B | General building construction | 1/62-1/682, 1/74-1/76, 1/82, 1/88, 1/92-1/98, 103/00-103/06 |
| E04C | Structural elements and building materials | 2/00-2/10, 2/20-2/296, 5/00-5/01, 5/04, 5/07 |
| E04D | Roof coverings | 1/00, 1/04-1/10, 1/14-1/22, 3/00-3/06, 3/16-3/18, 3/35, 5/00-5/10 |
| E04F | Finishing work on buildings | 13/00-13/02, 13/12-13/14, 13/18, 15/00, 15/08-15/10 |
| E21B | Earth drilling; recovery of oil, gas, water, soluble materials or mineral slurries from wells | 00/00, 21/00, 21/06-21/07, 21/14-21/16, 29/02, 35/00, 37/00, 37/06-37/08, 41/02, 43/00, 43/16-43/295, 43/34, 43/40 |
| E21F | Mine safety devices | 00/00, 5/00-5/02, 5/06-5/08, 5/12, 5/16-5/20, 7/00 |
| F: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| F01B | Positive-displacement machines or engines | 31/02 |
| F01C | Rotary-piston or oscillating-piston machines or engines | 21/04 |
| F01D | Non-positive displacement machines or engines | 25/02, 25/22 |
| F01K | Steam engine plants | 25/00-25/14 |
| F01N | Gas-flow silencers or exhaust apparatus for machines or engines | 3/00-3/021, 3/023-3/025, 3/028-3/029, 3/033-3/035, 3/04, 3/08-3/28, 7/16, 9/00, 11/00 |
| F01P | Cooling of machines or engines | 3/22, 9/00-9/02, 9/06 |
| F02B | Internal-combustion piston engines | 27/00, 43/08-43/10, 45/00-45/02, 45/06-47/10, 51/00-51/06, 77/00-77/04 |
| F02C | Gas-turbine plants; jet-propulsion plants | 3/20-3/30, 3/34, 5/06, 6/10, 7/12, 7/16-7/18, 7/30 |
| F02D | Controlling combustion engines | 19/00-19/04, 19/12 |
| F02F | Cylinder, pistons or casings for combustion engines | 1/12 |
| F02K | Jet-propulsion plants | 9/08-9/22, 9/42, 9/70-9/72 |
| F02M | Fuel supply of combustion engines | 7/16, 17/40, 25/00, 25/06-25/07, 25/10-27/08 |
| F02P | Ignition | 23/00-23/04 |
| F03G | Spring, weight or inertia motors | 1/02, 6/00-6/06 |
| F03H | Producing a reactive propulsive thrust | all groups |
| F04B | Pumps; postive displacement machines for liquids | 15/00-15/08, 37/00-37/04 |
| F04D | Non-positive displacement pumps | 7/00-7/08, 29/02 |
| F04F | Pumping of fluid by direct contact of another fluid or by inertia | 1/14-1/16, 5/36-5/38, 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 | 01/06 |
| F16C | Shafts; bearings; rotary bodies | 27/06, 33/00, 33/06, 33/10-33/12, 33/16-33/24, 33/44, 33/56, 33/62-33/66 |
| F16D | Clutches; brakes;couplings for transmitting rotation | 3/19, 3/58, 3/68, 3/74, 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, 61/50 |
| F16J | Pistons; cylinders; pressure vessels | 1/01-1/02, 9/26-9/28, 15/06-15/14, 15/20 |
| F16K | Valves; taps; cocks | 27/00-27/06, 27/08-27/12 |
| F16L | Pipes; general means for thermal insulation | 9/00, 9/02-9/127, 9/133-9/153, 11/02-11/15, 11/26, 13/02, 13/08-13/12, 17/067, 23/026, 23/032, 23/20-23/22, 33/34, 47/00-47/03, 47/20-47/24, 55/164-55/1645, 55/175, 58/00-59/02 |
| F16N | Lubricating | 15/00-15/02, 17/00-17/06 |
| F17C | Vessels for storing or containing compressed, liquified or solidified gases | 1/10-1/16, 3/02-3/06, 3/12-13/00 |
| F17D | Pipelines and systems | 1/00-1/05, 1/08, 3/12-3/16 |
| F21K | Light sources | 2/00-2/08, 5/00, 7/00 |
| F21V | Features or details of lighting devices | 1/16, 1/20-1/24, 3/04, 7/22, 9/00-9/16, 15/01, 15/06, 31/04 |
| F22G | Superheating of steam | 1/14 |
| F22B | Steam generation; steam boilers | 1/02-1/06, 1/16, 3/02, 37/04, 37/48 |
| F23B | Solid-fuel combustion apparatus | 7/00 |
| F23C | Fluent-fuel combustion apparatus | 10/00-10/32, 101/00 |
| F23D | Burners | 5/00, 14/18, 14/80 |
| F23G | Waste incineration | 5/00-5/027, 5/12-5/18, 5/30, 5/48, 7/00, 7/04-7/08, 7/12-7/14 |
| F23J | Removal or treatment of combustion products or residues | 1/00, 1/08, 3/00, 9/00, 15/00-15/04 |
| 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 | 5/00, 5/12 |
| F23Q | Ignition | 2/30, 2/44-2/48, 13/00 |
| F23R | Generation of high pressure or high velocity combustion products | 3/40 |
| F24F | Air conditioning | 3/12, 3/16, 5/00 |
| F24J | Production or use of heat | 00/00-1/00, 2/28, 2/42, 2/46-2/51, 3/00, 3/08 |
| F25B | Refrigeration plants, machines or systems | 9/00-9/14, 15/00-15/16, 17/00-17/02, 17/08-17/12, 30/04, 35/00-35/04, 37/00, 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 | 1/00, 3/08-3/097, 5/00, 5/16, 7/00 |
| F27D | Details of kilns, furnaces and retorts | 1/00, 1/16 |
| F28C | Direct-contact heat exchangers | 3/00-3/18 |
| F28D | Other heat exchangers | 13/00, 15/00-15/04 |
| F28F | Details of heat-exchange or heat-transfer apparatus | 13/04, 13/18, 19/00-21/00, 23/00-23/02 |
| F28G | Surface cleaning of heat exchangers | 9/00, 11/00, 13/00 |
| F41A | Features of small arms and ordnance | 1/00, 1/04, 21/00-21/04, 21/20-21/22 |
| F41H | Armour | 1/00-1/02, 1/08, 9/10 |
| F42B | Explosive charges | 1/032, 1/036, 3/107-3/11, 3/192-3/195, 3/28, 4/30, 5/145-5/15, 5/16, 5/188-5/196, 5/26-5/28, 5/295-5/313, 12/00, 12/36-12/50, 12/70-12/82, 14/04, 19/20, 33/00, 33/14 |
| F42C | Ammunition fuses | 15/31, 15/36-15/38, 19/08-19/09 |
| F42D | Blasting | 1/24-1/28 |
| G: PHYSICS | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| G01B | Measurement of length, thickness or linear dimensions | 1/00 |
| G01D | Measuring not adapted for a specific variable | 15/05, 15/10-15/14 |
| G01F | Measuring volume, flow or level | 1/00, 1/72-1/78, 1/86, 3/00, 13/00, 22/00 |
| G01J | Measurement of properties of IR, visible or UV radiation | 00/00-1/00, 1/38, 1/42-1/54, 1/58, 3/00, 3/12, 3/18-3/22, 3/26-3/51 |
| G01K | Measurement of temperature | 5/00, 5/12, 5/64-5/66, 11/00-11/20, 11/30-11/32, 17/00-17/04, 19/00 |
| G01N | Analyzing materials by determining their chemical and physical properties | 00/00-1/02, 1/22, 1/28-1/30, 1/32-1/34, 1/38-1/44, 5/00-7/20, 11/00, 13/00-15/04, 15/06-15/10, 15/14-17/04, 19/10-21/01, 21/17-21/35, 21/39-21/55, 21/59-21/80, 21/82-21/85, 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, 27/26-27/453, 27/60, 27/62-27/76, 27/92-29/02, 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, 35/08-37/00 |
| G01R | Measurement of electric and magnetic variables | 13/00, 13/12-13/14, 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, 5/04-5/14 |
| G02B | Optical elements,systems or apparatus | 1/00-1/12, 5/00, 5/32-6/02, 6/10-6/12, 6/13-6/138, 6/16-6/245 |
| G02F | Optical devices | 00/00-1/1337, 1/1343-1/155, 1/167-1/295, 1/35-1/39, 3/00-3/02 |
| G03C | Photosensitive materials and processes in photography | 00/00, 1/025, 1/74, 1/785,1/805-1/81, 1/91, 1/95-3/00, 5/00, 5/04-5/18, 5/28-5/29, 5/60, 7/04-7/24, 7/46, 8/30, 8/34, 8/40-8/50, 9/00-11/00, 11/06-11/24 |
| G03F | Photomechanical production of textured or patterned surfaces | 00/00-1/12, 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, 13/00-13/08, 13/095-13/34, 16/00-17/04, 17/08-17/10, 21/00, 21/06-21/10 |
| G04B | Mechanical clocks and watches | 31/004-31/016, 31/08, 39/00-39/02 |
| G05D | Control systems for non-electic variables | 5/00, 5/04, 7/00, 11/00-11/02, 11/08-11/12, 11/16, 21/00-22/00, 23/00, 24/00, 27/00, 29/00 |
| G06G | Analog computers | 7/48, 7/54-7/58, 7/75 |
| G06K | Data recognition; record carriers | 19/02 |
| 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, 23/12, 23/20, 23/24-23/26 |
| G10K | Sound-producing devices | 11/162-11/168 |
| G11B | Information storage | 3/70, 5/127-5/133, 5/187, 5/235, 5/255-5/265, 5/31, 5/33, 5/40-5/41, 5/62-5/738, 5/84-5/858, 7/00, 7/24-7/26, 7/30-9/06, 9/08-11/03, 11/105-11/115, 11/24-13/08 |
| G11C | Static stores | 13/02 |
| G12B | Details of instruments | 21/00-21/08 |
| G21B | Fusion reactors | all groups |
| G21C | Nuclear reactors | 00/00-3/07, 3/16-3/32, 3/324-3/326 3/36-3/40, 5/00, 5/12, 5/18-7/107, 7/22-7/34, 9/00, 9/02-11/00, 11/06-13/00, 13/08-15/00, 15/24-15/247, 15/253-15/257, 15/28-17/00, 17/02-17/028, 17/06, 19/00, 19/28-19/32, 19/34, 19/38, 21/00-21/02, 21/14-23/00 |
| G21D | Nuclear power plant | 00/00, 7/00, 7/04 |
| G21F | Radiation protection; decontamination | 00/00-1/12, 5/00-5/008, 5/015, 9/00-9/36 |
| G21G | Conversion of chemical elements and radioactive sources | 4/00-5/00 |
| G21H | Energy from radioactive sources | 00/00-7/00 |
| G21J | Nuclear explosives | 00/00-1/00, 5/00 |
| G21K | Techniques for handling of particles or radiation | 1/00-1/06, 1/10-5/00, 7/00 |
| H: ELECTRICITY | ||
|---|---|---|
| Class/Subclass | Subject Matter | Groups Selectively Covered |
| H01B | Cables, conductors, insulators and dielectrics | 00/00, 7/17, 7/28, 7/288-7/295, 12/00, 13/16, 13/22 |
| H01C | Resistors | 7/00-7/04, 7/10-7/105, 7/12-7/13, 10/00-10/02, 11/00-13/00, 17/00, 17/06-17/20 |
| H01F | Magnetic materials and inductors | 00/00, 1/03, 5/00, 6/00-6/06, 10/06, 27/00, 27/23, 41/00, 41/14-41/28 |
| H01G | Capacitors | 00/00, 4/00-4/008, 4/018-4/224, 5/00-5/014, 7/00-9/02, 9/04, 9/048-9/055, 9/07-9/08, 9/145-9/155, 9/22-9/28, 15/00-17/00 |
| H01H | Electric switches | 1/00-1/04, 29/06, 33/22, 33/76, 85/06, 85/11, 85/17, 85/18 |
| H01J | Electric discharge tubes or discharge lamps | 00/00, 1/05, 1/12, 1/14, 1/30-1/38, 1/46-1/48, 1/53-1/54, 1/58-1/64, 1/68-1/74, 1/78, 1/90, 7/00-7/12, 9/00-9/04, 9/12-9/14, 9/20-9/233, 9/52, 13/00-13/08, 13/16, 13/28, 15/00-15/02, 17/00-17/10, 17/20, 17/24-17/26, 17/38, 17/50, 19/00-19/06, 19/24-19/32, 19/54-19/57, 19/68-19/70, 21/00-21/02, 21/20, 27/00-27/04, 27/14-27/16, 27/20-29/04, 29/08-29/28, 29/36, 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, 41/00-41/20, 43/00-43/04, 43/22, 45/00-47/12, 49/00-49/18, 49/26-49/30, 49/34-49/36, 49/40-61/073, 61/12, 61/26-61/28, 61/35, 61/38-61/48, 61/54, 61/58-61/64, 61/70-61/76, 61/80, 61/98-65/08 |
| H01K | Electric incandescent lamps | 00/00-1/10, 1/20, 1/28, 1/32, 1/40, 1/50-1/56, 3/02 |
| H01L | Semiconductor devices | 00/00-21/302, 21/306-21/445, 21/46-21/461, 21/465-21/479, 21/62-21/64, 21/70-21/763, 21/765-21/86, 23/00, 23/06-23/10, 23/14-23/15, 23/18-23/29, 23/36, 23/373, 23/427, 23/46-23/482, 23/488, 23/52, 23/532, 23/552-23/556, 27/00-29/04, 29/12-29/28, 29/36-29/40, 29/43-29/812, 29/86-31/0232, 31/0248-31/0336, 31/036-31/042, 31/052-31/055, 31/06-35/02, 35/08, 35/12-35/28, 35/32-39/02, 39/12-41/047, 41/06-41/087, 41/12-51/40, 101/00 |
| H01M | Processes or means (e.g., batteries) for direct conversion of chemical energy into electrical energy | 00/00-2/00, 2/14-2/16, 2/20-2/22, 2/26, 2/32, 4/00-4/20, 4/22, 4/62-4/68, 4/72-4/76, 4/80-4/84, 6/02, 6/08-6/12, 6/22, 6/30-6/48, 8/00-8/04, 8/24-10/00, 10/04-10/12, 10/18-10/40, 10/52, 12/00-16/00 |
| H01P | Waveguides | 00/00-1/00, 1/10-1/11, 1/15, 1/20, 1/215-1/218, 1/22 |
| H01R | Electrically conductive connections | 3/00, 4/00-4/04, 4/58, 13/00-13/03, 39/18-39/22 |
| H01S | Devices using stimulated emission | 00/00-3/03, 3/036-3/038, 3/09-3/10, 3/102-3/104, 3/11-3/113, 3/13-3/134, 3/14-4/00, 5/00, 5/028-5/068, 5/0687-5/12, 5/14-5/50 |
| H01T | Spark gaps; corona devices | 1/00, 1/20-1/24, 13/38-13/39 |
| H02K | Dynamo-electric machines | 1/02-1/04, 3/02, 3/30, 3/44, 5/02, 44/08-44/10 |
| H05B | Electric heating; electric lighting | 00/00, 3/10-3/14, 7/06-7/09, 31/00-31/02, 31/06-31/14, 33/00, 33/12-35/00 |
| H05F | Static electricity | 1/00-1/02 |
| H05G | X-ray technique | 00/00-1/00, 2/00 |
| H05H | Plasma technique; production of charged particles, neutrons or atomic or molecular beams | 00/00-1/00, 1/24-1/26, 1/54-6/00, 9/00-15/00 |
| H05K | Printed circuits; manufacture of electric component assemblies | 00/00-1/11, 1/16, 3/00-3/02, 3/06-3/18, 3/22, 3/26-3/28, 3/34, 3/38-3/46 |