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Symbol Select IPC entry Title
A
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HUMAN NECESSITIES
B
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PERFORMING OPERATIONSTRANSPORTING
C
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CHEMISTRYMETALLURGY
C01
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CHEMISTRY
C01
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INORGANIC CHEMISTRY
C02
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TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C03
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GLASSMINERAL OR SLAG WOOL
C04
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CEMENTSCONCRETEARTIFICIAL STONECERAMICSREFRACTORIES [4]
C05
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FERTILISERSMANUFACTURE THEREOF [4]
C06
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EXPLOSIVESMATCHES
C07
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ORGANIC CHEMISTRY [2]
C08
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ORGANIC MACROMOLECULAR COMPOUNDSTHEIR PREPARATION OR CHEMICAL WORKING-UPCOMPOSITIONS BASED THEREON
C09
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DYESPAINTSPOLISHESNATURAL RESINSADHESIVESCOMPOSITIONS NOT OTHERWISE PROVIDED FORAPPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C10
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PETROLEUM, GAS OR COKE INDUSTRIESTECHNICAL GASES CONTAINING CARBON MONOXIDEFUELSLUBRICANTSPEAT
C10B
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DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS (cracking oils C10G; underground gasification of minerals E21B 43/295) [5]
C10C
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WORKING-UP TAR, PITCH, ASPHALT, BITUMENPYROLIGNEOUS ACID
C10F
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DRYING OR WORKING-UP OF PEAT [5]
C10G
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CRACKING HYDROCARBON OILSPRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION (cracking to hydrogen or synthesis gas C01B; cracking or pyrolysis of hydrocarbon gases to individual hydrocarbons or mixtures thereof of definite or specified constitution C07C; cracking to cokes C10B)RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASESREFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONSREFORMING OF NAPHTHAMINERAL WAXES [6]
C10H
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PRODUCTION OF ACETYLENE BY WET METHODS [5]
C10J
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PRODUCTION OF GASES CONTAINING CARBON MONOXIDE AND HYDROGEN FROM SOLID CARBONACEOUS MATERIALS BY PARTIAL OXIDATION PROCESSES INVOLVING OXYGEN OR STEAM  (underground gasification of minerals E21B 43/295)CARBURETTING AIR OR OTHER GASES [5]
C10K
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PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
C10L
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FUELS NOT OTHERWISE PROVIDED FORNATURAL GASSYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR  C10KLIQUEFIED PETROLEUM GAS USE OF ADDITIVES TO FUELS OR FIRES FIRE-LIGHTERS [5]
C10L 1/00
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Liquid carbonaceous fuels [1, 2006.01]
C10L 1/02
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essentially based on components consisting of carbon, hydrogen, and oxygen only [1, 2006.01]
C10L 1/04
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essentially based on blends of hydrocarbons [1, 2006.01]
C10L 1/06
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. . for spark ignition [1, 2006.01]
C10L 1/08
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. . for compression ignition [1, 2006.01]
C10L 1/10
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containing additives [1, 2006.01]
C10L 1/12
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. . Inorganic compounds [1, 2006.01]
C10L 1/14
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. . Organic compounds [1, 2006.01]
C10L 1/16
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. . . Hydrocarbons [1, 2006.01]
C10L 1/18
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. . . containing oxygen [1, 2006.01]
C10L 1/182
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. . . . containing hydroxy groupsSalts thereof [2006.01]
C10L 1/183
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. . . . . at least one hydroxy group bound to an aromatic carbon atom [2006.01]
C10L 1/185
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. . . . EthersAcetalsKetalsAldehydesKetones [2006.01]
C10L 1/188
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. . . . Carboxylic acidsSalts thereof [2006.01]
C10L 1/189
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. . . . . having at least one carboxyl group bound to an aromatic carbon atom [2006.01]
C10L 1/19
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. . . . Esters [2006.01]
C10L 1/192
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. . . . Macromolecular compounds [2006.01]
C10L 1/195
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. . . . . obtained by reactions involving only carbon-to-carbon unsaturated bonds [2006.01]
C10L 1/196
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. . . . . . derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof [2006.01]
C10L 1/197
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. . . . . . derived from monomers containing a carbon-to-carbon unsaturated bond and an acyloxy group of a saturated carboxylic or carbonic acid [2006.01]
C10L 1/198
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. . . . . obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds [2006.01]
C10L 1/20
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. . . containing halogen [1, 2006.01]
C10L 1/22
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. . . containing nitrogen [1, 2006.01]
C10L 1/222
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. . . . containing at least one carbon-to-nitrogen single bond [2006.01]
C10L 1/223
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. . . . . having at least one amino group bound to an aromatic carbon atom [2006.01]
C10L 1/224
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. . . . . AmidesImides [2006.01]
C10L 1/226
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. . . . containing at least one nitrogen-to-nitrogen bond, e.g. azo compounds, azides, hydrazines [2006.01]
C10L 1/228
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. . . . containing at least one carbon-to-nitrogen double bond, e.g. guanidines, hydrazones, semicarbazones, iminescontaining at least one carbon-to-nitrogen triple bond, e.g. nitriles [2006.01]
C10L 1/23
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. . . . containing at least one nitrogen-to-oxygen bond, e.g. nitro-compounds, nitrates, nitrites [2006.01]
C10L 1/232
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. . . . containing nitrogen in a heterocyclic ring [2006.01]
C10L 1/233
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. . . . . containing nitrogen and oxygen in the ring, e.g. oxazoles [2006.01]
C10L 1/234
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. . . . Macromolecular compounds [2006.01]
C10L 1/236
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. . . . . obtained by reactions involving only carbon-to-carbon unsaturated bonds [2006.01]
C10L 1/238
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. . . . . obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds [2006.01]
C10L 1/2383
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. . . . . . Polyamines or polyimines, or derivatives thereof [2006.01]
C10L 1/2387
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. . . . . . . Polyoxyalkyleneamines [2006.01]
C10L 1/24
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. . . containing sulfur, selenium or tellurium [1, 2006.01]
C10L 1/26
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. . . containing phosphorus [1, 2006.01]
C10L 1/28
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. . . containing silicon [1, 2006.01]
C10L 1/30
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. . . containing elements not mentioned in groups C10L 1/16-C10L 1/28 [1, 2006.01]
C10L 1/32
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consisting of coal-oil suspensions or aqueous emulsions [1, 2006.01]
C10L 3/00
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Gaseous fuelsNatural gasSynthetic natural gas obtained by processes not covered by subclasses C10G, C10KLiquefied petroleum gas [1, 5, 2006.01]
C10L 5/00
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Solid fuels (produced by solidifying fluid fuels C10L 7/00; peat briquettes C10F 7/06) [1, 2006.01]
C10L 7/00
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Fuels produced by solidifying fluid fuels [1, 2006.01]
C10L 8/00
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Fuels not provided for in other groups of this subclass [2006.01]
C10L 9/00
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Treating solid fuels to improve their combustion [1, 2006.01]
C10L 10/00
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Use of additives to fuels or fires for particular purposes (using binders for briquetting solid fuels C10L 5/10; using additives to improve the combustion of solid fuels C10L 9/10) [1, 2006.01]
C10L 11/00
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Fire-lighters [1, 2006.01]
C10M
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LUBRICATING COMPOSITIONS (well drilling compositions C09K 8/02)USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION (mould release, i.e. separating, agents for metals B22C 3/00, for plastics or substances in a plastic state, in general B29C 33/56, for glass C03B 40/02; textile lubricating compositions D06M 11/00, D06M 13/00, D06M 15/00; immersion oils for microscopy G02B 21/33) [4]
C10N
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INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M [4]
C11
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ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXESFATTY ACIDS THEREFROMDETERGENTSCANDLES
C12
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BIOCHEMISTRYBEERSPIRITSWINEVINEGARMICROBIOLOGYENZYMOLOGYMUTATION OR GENETIC ENGINEERING
C13
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SUGAR INDUSTRY [4]
C14
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SKINSHIDESPELTS OR LEATHER
C21
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METALLURGY
C21
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METALLURGY OF IRON
C22
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METALLURGYFERROUS OR NON-FERROUS ALLOYSTREATMENT OF ALLOYS OR NON-FERROUS METALS
C23
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COATING METALLIC MATERIALCOATING MATERIAL WITH METALLIC MATERIALCHEMICAL SURFACE TREATMENTDIFFUSION TREATMENT OF METALLIC MATERIALCOATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERALINHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL [2]
C25
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ELECTROLYTIC OR ELECTROPHORETIC PROCESSESAPPARATUS THEREFOR [4]
C30
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CRYSTAL GROWTH [3]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C40
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COMBINATORIAL TECHNOLOGY [2006.01]
C99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
D
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TEXTILESPAPER
E
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FIXED CONSTRUCTIONS
F
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MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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PHYSICS
H
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ELECTRICITY

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