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carburetting air or other gases (79843) 79843
chemistry (79843) 79843
fuels (79843) 79843
lubricants (79843) 79843
metallurgy (79843) 79843
peat (79843) 79843
petroleum, gas or coke industries (79843) 79843
production of producer gas, water-gas, synthesis gas fromsolid carbonaceous material, or mixtures containing these gases (79843) 79843
technical gases containing carbon monoxide (79843) 79843
general tagging of cross-sectional technologies spanning over several sections of the ipc (22615) 22615
general tagging of new technological developments (22615) 22615
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (22615) 22615
technologies or applications for mitigation or adaptation againstclimate change (21045) 21045
blasting (19823) 19823
heating (19823) 19823
lighting (19823) 19823
mechanical engineering (19823) 19823
weapons (19823) 19823
performing operations (18476) 18476
transporting (18476) 18476
climate change mitigation technologies in the production orprocessing of goods (14826) 14826
physical or chemical processes or apparatus in general (13663) 13663
purifying or modifying the chemical composition of combustiblegases containing carbon monoxide (13430) 13430
inorganic chemistry (12892) 12892
compounds thereof (12749) 12749
non-metallic elements (12673) 12673
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (11322) 11322
combustion apparatus (11132) 11132
combustion processes (11132) 11132
chemical or physical processes, e.g. catalysis or colloidchemistry (9837) 9837
their relevant apparatus (9837) 9837
destructive distillation of carbonageous materials forproduction of gas, coke, tar, or similar materials (8804) 8804
cracking hydrocarbon oils (7601) 7601
mineral waxes (7601) 7601
production of liquid hydrocarbon mixtures, e.g. by destructivehydrogenation, oligomerisation, polymerisation (7601) 7601
recovery of hydrocarbon oils from oil-shale, oil-sand, orgases (7601) 7601
refining mixtures mainly consisting of hydrocarbons (7601) 7601
reforming of naphtha (7601) 7601
consuming waste products by combustion (5678) 5678
cremation furnaces (5678) 5678
adding materials to fuels or fires to reduce smoke orundesirable deposits or to facilitate soot removal (5505) 5505
firelighters (5505) 5505
fuels not otherwise provided for (5505) 5505
liquefied petroleum gas (5505) 5505
natural gas (5505) 5505
synthetic natural gas obtained by processes not covered bysubclasses c10g, c10k (5505) 5505
separation (4647) 4647
disposal of solid waste (3967) 3967
reclamation of contamined soil soil (3967) 3967
combustion engines (3613) 3613
hot-gas or combustion-product engine plants (3613) 3613
organic chemistry (3570) 3570
acyclic or carbocyclic compounds (3441) 3441
air intakes for jet-propulsion plants (2810) 2810
controlling fuel supply in air-breathing jet-propulsion plants (2810) 2810
gas-turbine plants (2810) 2810
engine plants in general (2665) 2665
machines or engines in general (2665) 2665
steam engines (2665) 2665
technical subjects covered by former uspc (2559) 2559
engine plants not otherwise provided for (2426) 2426
engines using special working fluids or cycles (2426) 2426
steam accumulators (2426) 2426
steam engine plants (2426) 2426
air (2351) 2351
methodsor apparatus for combustion using fluid fuelor solid fuel suspended in (2351) 2351
furnaces (2191) 2191
kilns (2191) 2191
ovens (2191) 2191
retorts (2191) 2191
treatment of water, waste water, sewage, or sludge (2123) 2123
electricity (2071) 2071
metallurgy of iron (1939) 1939
flues (1923) 1923
removal or treatment of combustion products or combustionresidues (1923) 1923
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (1724) 1724
steam generation (1684) 1684
manufacture of iron or steel (1661) 1661
methods of steam generation (1594) 1594
steam boilers (1594) 1594
heat exchange in general (1568) 1568
burners (1442) 1442
basic electric elements (1368) 1368
ranges (1365) 1365
ventilating (1365) 1365
details or accessories of furnaces, kilns, ovens, or retorts,in so far as they are of kinds occurring in more than one kindof furnace (1350) 1350
feeding fuel to combustion apparatus (1312) 1312
climate change mitigation technologies related to wastewatertreatment or waste management (1295) 1295
processes or means, e.g. batteries, for the direct conversionof chemical into electrical energy (1258) 1258
physics (1199) 1199
furnaces, kilns, ovens, or retorts in general (1189) 1189
open sintering or like apparatus (1189) 1189
conveying (1124) 1124
handling thin or filamentary material (1124) 1124
packing (1124) 1124
storing (1124) 1124
heat-exchange apparatus, not provided for in another subclass,in which the heat-exchange media do not come into direct contact (1106) 1106
pneumatic tube conveyors (1017) 1017
shop conveyor systems (1017) 1017
transport or storage devices, e.g. conveyors for loading ortipping (1017) 1017
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English (62086) 62086
French (14804) 14804
Chinese (14509) 14509
German (11250) 11250
Russian (1787) 1787
Korean (1696) 1696
Spanish (1333) 1333
Japanese (1294) 1294
Portuguese (1192) 1192
Finnish (677) 677
Swedish (658) 658
Polish (450) 450
Italian (393) 393
Danish (357) 357
Dutch (314) 314
Norwegian (295) 295
Ukrainian (260) 260
Czech (151) 151
Turkish (84) 84
Hungarian (65) 65
Romanian (61) 61
Slovenian (39) 39
Bulgarian (35) 35
Greek (30) 30
Croatian (28) 28
Estonian (26) 26
Slovak (23) 23
Indonesian (22) 22
Serbian (17) 17
Lithuanian (15) 15
Hebrew (14) 14
Arabic (13) 13
Latvian (11) 11
Icelandic (6) 6
Bosnian (1) 1
Moldavian (1) 1
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