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Patent (330074) 330074
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chemistry (330107) 330107
fuels (330092) 330092
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lubricants (330068) 330068
cracking hydrocarbon oils (330066) 330066
mineral waxes (330066) 330066
peat (330066) 330066
petroleum, gas or coke industries (330066) 330066
production of liquid hydrocarbon mixtures, e.g. by destructivehydrogenation, oligomerisation, polymerisation (330066) 330066
recovery of hydrocarbon oils from oil-shale, oil-sand, orgases (330066) 330066
refining mixtures mainly consisting of hydrocarbons (330066) 330066
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chemical or physical processes, e.g. catalysis or colloidchemistry (124659) 124659
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general tagging of cross-sectional technologies spanning over several sections of the ipc (74617) 74617
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organic chemistry (70696) 70696
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technologies or applications for mitigation or adaptation againstclimate change (59177) 59177
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separation (37313) 37313
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adding materials to fuels or fires to reduce smoke orundesirable deposits or to facilitate soot removal (33131) 33131
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fuels not otherwise provided for (33131) 33131
liquefied petroleum gas (33131) 33131
synthetic natural gas obtained by processes not covered bysubclasses c10g, c10k (33131) 33131
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reduction of greenhouse gas [ghg] emissions, related to energygeneration, transmission or distribution (17631) 17631
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general methods of organic chemistry (14026) 14026
destructive distillation of carbonageous materials forproduction of gas, coke, tar, or similar materials (13974) 13974
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lubricating compositions (10480) 10480
use of chemical substances either alone or as lubricatingingredients in a lubricating composition (10480) 10480
carburetting air or other gases (8202) 8202
production of producer gas, water-gas, synthesis gas fromsolid carbonaceous material, or mixtures containing these gases (8202) 8202
purifying or modifying the chemical composition of combustiblegases containing carbon monoxide (6659) 6659
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animal and vegetable oils, fats, fatty substances and waxes (6429) 6429
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fatty acids therefrom (6429) 6429
treatment of water, waste water, sewage, or sludge (6423) 6423
indexing scheme associated with subclass c10m relating to lubricatingcompositions (6331) 6331
physics (5390) 5390
climate change mitigation technologies related to wastewatertreatment or waste management (5259) 5259
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earth drilling, e.g. deep drilling (4629) 4629
obtaining oil, gas, water, soluble or meltable materials or aslurry of minerals from wells (4629) 4629
electricity (4506) 4506
after-treatment not covered by subclasses c08b, c08c, c08f,c08g (4494) 4494
general processes of compounding (4494) 4494
working-up (4494) 4494
materials for miscellaneous applications, not provided forelsewhere (4441) 4441
pyroligneous acid (4383) 4383
working-up pitch, asphalt, bitumen, tar (4383) 4383
combustion engines (4227) 4227
hot-gas or combustion-product engine plants (4227) 4227
fermentation or enzyme-using processes to synthesise a desiredchemical compound or composition or to separate optical isomersfrom a racemic mixture (3827) 3827
heat exchange in general (3811) 3811
human necessities (3732) 3732
macromolecular compounds obtained by reactions only involvingcarbon-to-carbon unsaturated bonds (3719) 3719
technical subjects covered by former us classification (3582) 3582
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Engineering & Comp. Sci. - Stacks (35) 35
Gerstein Science - Stacks (10) 10
UTL at Downsview - May be requested (7) 7
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