IPC7 List II - Selective Coverage

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 1/08
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 1/02
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 1/04

 

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 3/08
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 1/08
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 7/02
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 5/08
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 1/06
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

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