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blasting (308010) 308010
fluid heaters, e.g. water or air heaters, having heatgenerating means, in general (308010) 308010
heating (308010) 308010
lighting (308010) 308010
mechanical engineering (308010) 308010
ranges (308010) 308010
ventilating (308010) 308010
weapons (308010) 308010
domestic hot-water supply systems (37874) 37874
domestic- or space-heating systems, e.g. central heatingsystems (37874) 37874
elements or components therefor (37874) 37874
combustion apparatus (34964) 34964
combustion processes (34964) 34964
electricity (24415) 24415
heat exchange in general (23929) 23929
general tagging of cross-sectional technologies spanning over several sections of the ipc (19694) 19694
general tagging of new technological developments (19694) 19694
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (19694) 19694
human necessities (17801) 17801
performing operations (17146) 17146
transporting (17146) 17146
heat-exchange apparatus, not provided for in another subclass,in which the heat-exchange media do not come into direct contact (16774) 16774
electric techniques not otherwise provided for (16470) 16470
technologies or applications for mitigation or adaptation againstclimate change (16134) 16134
electric heating (15717) 15717
electric lighting not otherwise provided for (15717) 15717
details of heat-exchange and heat-transfer apparatus, ofgeneral application (12556) 12556
regulating or controlling combustion (12336) 12336
combined heating and refrigeration systems (11993) 11993
heat pump systems (11993) 11993
liquefaction solidification of gases (11993) 11993
manufacture or storage of ice (11993) 11993
refrigeration or cooling (11993) 11993
coffee mills (11757) 11757
domestic articles or appliances (11757) 11757
furniture (11757) 11757
spice mills (11757) 11757
suction cleaners in general (11757) 11757
physics (11328) 11328
heat-pump systems (10816) 10816
refrigeration machines, plants or systems (10816) 10816
steam generation (10248) 10248
engineering elements and units (9847) 9847
general measures for producing and maintaining effectivefunctioning of machines or installations (9847) 9847
thermal insulation in general (9847) 9847
methods of steam generation (9026) 9026
steam boilers (9026) 9026
air-conditioning, air-humidification, ventilation, use of aircurrents for screening (8719) 8719
climate change mitigation technologies related to buildings,e.g. housing, house appliances or related end-userapplications (8121) 8121
chemistry (8057) 8057
metallurgy (8057) 8057
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (7103) 7103
details of domestic stoves or ranges, of general application (7088) 7088
other domestic stoves or ranges (7088) 7088
controlling (6758) 6758
regulating (6758) 6758
burners (6219) 6219
air supply (6162) 6162
draught-inducing (6162) 6162
supplying non-combustible liquid or gas (6162) 6162
systems for controlling or regulating non-electric variables (5873) 5873
fixed constructions (5550) 5550
sanitary equipment not otherwise provided for (5540) 5540
toilet accessories (5540) 5540
flues (5191) 5191
removal or treatment of combustion products or combustionresidues (5191) 5191
vehicles in general (5167) 5167
actuating-floats (5139) 5139
cocks (5139) 5139
devices for venting or aerating (5139) 5139
taps (5139) 5139
valves (5139) 5139
physical or chemical processes or apparatus in general (5047) 5047
basic electric elements (4992) 4992
air (4558) 4558
methodsor apparatus for combustion using fluid fuelor solid fuel suspended in (4558) 4558
technical subjects covered by former uspc (4382) 4382
apparatus for making beverages (4253) 4253
kitchen equipment (4253) 4253
arrangements or adaptations of heating, cooling, ventilating,or other air-treating devices specially for passenger or goodsspaces of vehicles (4216) 4216
separation (3722) 3722
treatment of water, waste water, sewage, or sludge (3674) 3674
hygiene (3657) 3657
medical or veterinary science (3657) 3657
joints or fittings for pipes (3628) 3628
means for thermal insulation in general (3628) 3628
pipes (3628) 3628
supports for pipes, cables or protective tubing (3628) 3628
methods or apparatus for combustion using only solid fuel (3397) 3397
casings, linings, walls or doors specially adapted forcombustion chambers, e.g. firebridges (3388) 3388
details of combustion chambers, not otherwise providedfor (3388) 3388
devices for deflecting air, flames or combustion products incombustion chambers (3388) 3388
safety arrangements specially adapted for combustionapparatus (3388) 3388
sewerage (3362) 3362
water supply (3362) 3362
solar heat collectors (3269) 3269
solar heat systems (3269) 3269
technical subjects covered by former us classification (3164) 3164
combustion engines (2936) 2936
hot-gas or combustion-product engine plants (2936) 2936
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English (257443) 257443
Chinese (65521) 65521
German (31280) 31280
French (28454) 28454
Korean (11957) 11957
Japanese (8014) 8014
Russian (4251) 4251
Spanish (3620) 3620
Italian (2070) 2070
Swedish (1302) 1302
Polish (1165) 1165
Portuguese (1165) 1165
Finnish (1069) 1069
Dutch (1060) 1060
Danish (922) 922
Norwegian (631) 631
Ukrainian (496) 496
Czech (375) 375
Turkish (317) 317
Romanian (215) 215
Greek (151) 151
Hungarian (107) 107
Slovenian (86) 86
Slovak (76) 76
Lithuanian (69) 69
Bulgarian (64) 64
Serbian (60) 60
Latvian (47) 47
Croatian (36) 36
Estonian (31) 31
Hebrew (30) 30
Arabic (23) 23
Indonesian (4) 4
Moldavian (1) 1
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