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pyroligneous acid (22935) 22935
chemistry (22862) 22862
fuels (22847) 22847
peat (22845) 22845
lubricants (22844) 22844
metallurgy (22844) 22844
petroleum, gas or coke industries (22844) 22844
technical gases containing carbon monoxide (22844) 22844
working-up pitch, asphalt, bitumen, tar (22844) 22844
cracking hydrocarbon oils (4296) 4296
mineral waxes (4296) 4296
production of liquid hydrocarbon mixtures, e.g. by destructivehydrogenation, oligomerisation, polymerisation (4296) 4296
recovery of hydrocarbon oils from oil-shale, oil-sand, orgases (4296) 4296
refining mixtures mainly consisting of hydrocarbons (4296) 4296
reforming of naphtha (4296) 4296
performing operations (4194) 4194
transporting (4194) 4194
compositions based thereon (3727) 3727
organic macromolecular compounds (3727) 3727
their preparation or chemical working-up (3727) 3727
physical or chemical processes or apparatus in general (3088) 3088
compositions of macromolecular compounds (3086) 3086
textiles (2334) 2334
natural or artificial threads or fibres (2203) 2203
spinning (2203) 2203
apparatus specially adapted for the manufacture of carbonfilaments (2199) 2199
chemical features in the manufacture of artificial filaments,threads, fibres, bristles or ribbons (2199) 2199
destructive distillation of carbonageous materials forproduction of gas, coke, tar, or similar materials (2145) 2145
general tagging of cross-sectional technologies spanning over several sections of the ipc (1766) 1766
general tagging of new technological developments (1766) 1766
technical subjects covered by former uspc cross-reference art collections [xracs] and digests (1766) 1766
inorganic chemistry (1727) 1727
fixed constructions (1644) 1644
compounds thereof (1537) 1537
non-metallic elements (1486) 1486
construction of roads, railways, or bridges (1368) 1368
construction of, or surfaces for, roads, sports grounds, orthe like (1368) 1368
machines or auxiliary tools for construction or repair (1368) 1368
chemical or physical processes, e.g. catalysis or colloidchemistry (1356) 1356
their relevant apparatus (1356) 1356
separation (1326) 1326
technologies or applications for mitigation or adaptation againstclimate change (1217) 1217
adding materials to fuels or fires to reduce smoke orundesirable deposits or to facilitate soot removal (1202) 1202
firelighters (1202) 1202
fuels not otherwise provided for (1202) 1202
liquefied petroleum gas (1202) 1202
natural gas (1202) 1202
synthetic natural gas obtained by processes not covered bysubclasses c10g, c10k (1202) 1202
organic chemistry (1145) 1145
acyclic or carbocyclic compounds (1022) 1022
artificial stone (1003) 1003
cements (1003) 1003
ceramics (1003) 1003
compositions thereof, e.g. mortars, concrete or like buildingmaterials (1003) 1003
concrete (1003) 1003
lime, magnesia (1003) 1003
refractories (1003) 1003
slag (1003) 1003
treatment of natural stone (1003) 1003
adhesives (916) 916
dyes (916) 916
miscellaneous applications of materials (916) 916
miscellaneous compositions (916) 916
natural resins (916) 916
paints (916) 916
polishes (916) 916
mechanical engineering (899) 899
blasting (898) 898
heating (898) 898
lighting (898) 898
weapons (898) 898
use of inorganic or non-macromolecular organic substances ascompounding ingredients (796) 796
climate change mitigation technologies in the production orprocessing of goods (725) 725
reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (715) 715
mixing, e.g. dissolving, emulsifying, dispersing (610) 610
after-treatment not covered by subclasses c08b, c08c, c08f,c08g (599) 599
general processes of compounding (599) 599
working-up (599) 599
technical subjects covered by former uspc (585) 585
purifying or modifying the chemical composition of combustiblegases containing carbon monoxide (544) 544
apparatus therefor (453) 453
chemical paint or ink removers (438) 438
coating compositions, e.g. paints, varnishes orlacquers (438) 438
correcting fluids (438) 438
filling pastes (438) 438
inks (438) 438
pastes or solids for colouring or printing (438) 438
use of materials therefor (438) 438
woodstains (438) 438
macromolecular compounds obtained otherwise than by reactionsonly involving unsaturated carbon-to-carbon bonds (437) 437
electricity (377) 377
macromolecular compounds obtained by reactions only involvingcarbon-to-carbon unsaturated bonds (363) 363
human necessities (357) 357
technical subjects covered by former uspc cross-reference artcollections [xracs] and digests (337) 337
carburetting air or other gases (330) 330
production of producer gas, water-gas, synthesis gas fromsolid carbonaceous material, or mixtures containing these gases (330) 330
lubricating compositions (329) 329
use of chemical substances either alone or as lubricatingingredients in a lubricating composition (329) 329
treatment of water, waste water, sewage, or sludge (312) 312
disposal of solid waste (308) 308
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English (17957) 17957
French (3586) 3586
Chinese (3100) 3100
German (2619) 2619
Russian (707) 707
Spanish (485) 485
Korean (374) 374
Portuguese (279) 279
Norwegian (202) 202
Japanese (185) 185
Italian (180) 180
Danish (146) 146
Dutch (140) 140
Swedish (131) 131
Finnish (124) 124
Polish (115) 115
Romanian (48) 48
Czech (30) 30
Ukrainian (25) 25
Turkish (21) 21
Bulgarian (17) 17
Hungarian (14) 14
Indonesian (9) 9
Slovak (8) 8
Slovenian (8) 8
Icelandic (7) 7
Arabic (6) 6
Estonian (5) 5
Greek (3) 3
Latvian (3) 3
Croatian (1) 1
Serbian (1) 1
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