CPC Subgroup
C10G 53/02 plural serial stages only
Full Title
Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes > plural serial stages only
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- C10G 53/04 including at least one extraction step
- C10G 53/08 including at least one sorption step
- C10G 53/10 including at least one acid-treatment step
- C10G 53/12 including at least one alkaline treatment step
- C10G 53/14 including at least one oxidation step
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