CPC Subgroup
C10G 21/12 Organic compounds only
Full Title
Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents (C10G17/00, C10G19/00 take precedence) > characterised by the solvent used > Organic compounds only
8 direct subcodes
Child Classifications
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- C10G 21/14 Hydrocarbons
- C10G 21/16 Oxygen-containing compounds
- C10G 21/18 Halogen-containing compounds
- C10G 21/20 Nitrogen-containing compounds
- C10G 21/22 Compounds containing sulfur, selenium, or tellurium
- C10G 21/24 Phosphorus-containing compounds
- C10G 21/26 Silicon-containing compounds
- C10G 21/27 Organic compounds not provided for in a single one of groups C10G21/14 - C10G21/26
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