WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C10C　WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID (compositions of bituminous materials C08L 95/00; carbon filaments by decomposition of organic filaments D01F 9/14)

C10C 1/00 Working-up tar {petroleum (oil) tar C10C 3/00}

C10C 1/005 ・{by mixing two or more coaltar fractions}

C10C 1/02 ・Removal of water (by distillation C10C 1/06){de-watering of hydrocarbon oils C10G 33/00}

C10C 1/04 ・by distillation

C10C 1/06 ・・Removal of water

C10C 1/08 ・・Winning of aromatic fractions

C10C 1/10 ・・・benzene fraction {light fraction}

C10C 1/12 ・・・naphthalene fraction {heavy fraction}

C10C 1/14 ・・Winning of tar oils from tar

C10C 1/16 ・・Winning of pitch

C10C 1/18 ・by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G 21/00)

C10C 1/19 ・by thermal treatment not involving distillation

C10C 1/20 ・Refining by chemical means {inorganic or organic compounds}(obtaining hydrocarbon oils C10G)

C10C 1/205 ・・{refining in the presence of hydrogen}

C10C 3/00 Working-up pitch, asphalt, bitumen {compositions of asphalts and other bitumenous materials C08L 95/00}

C10C 3/002 ・{by thermal means}

C10C 3/005 ・{by mixing several fractions (also coaltar fractions with petroleum fractions)}

C10C 3/007 ・{winning and separation of asphalt from mixtures with aggregates, fillers and other products, e.g. winning from natural asphalt and regeneration of waste asphalt}

C10C 3/02 ・by chemical means {reaction}

C10C 3/023 ・・{with inorganic compounds}

C10C 3/026 ・・{with organic compounds}

C10C 3/04 ・・by blowing or oxidising {e.g. air, ozone}

C10C 3/06 ・by distillation

C10C 3/08 ・by selective extraction

C10C 3/10 ・Melting

C10C 3/12 ・・Devices therefor {transporting and melting for road construction E01C + s.gr.}

C10C 3/14 ・Solidifying, Disintegrating, e.g. granulating

C10C 3/16 ・・by direct contact with liquids

C10C 3/18 ・Removing in solid form from reaction vessels, containers and the like, e.g. by cutting out, by pressing

C10C 5/00 Production of pyroligneous acid {distillation of wood, dry distillation of organic waste}(carbonisation of wood C10B)