CPC Main Group
C10C 1/00 Working-up tar
6 direct subcodes
Child Classifications
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- C10C 1/02 Removal of water (by distillation C10C1/06 )
- C10C 1/04 by distillation
- C10C 1/18 by extraction with selective solvents (preparation of hydrocarbon oils from tar oils C10G21/00)
- C10C 1/19 by thermal treatment not involving distillation
- C10C 1/20 Refining by chemical means (obtaining hydrocarbon oils C10G)
Top Applicants
Top 10 applicants by patent filingsfor class C10, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
- SAUDI ARABIAN OIL COMPANY SA 2,918
- IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
- EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
- SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
- CHEVRON CORPORATION US 1,400
- PETROCHINA COMPANY 1,372
- LUBRIZOL CORPORATION US 1,324