CPC Subgroup Additional Only
C10M 2223/04 Phosphate esters
Full Title
Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions > having no phosphorus-to-carbon bonds > Phosphate esters
6 direct subcodes
Child Classifications
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- C10M 2223/0405 used as base material
- C10M 2223/041 Triaryl phosphates
- C10M 2223/042 Metal salts thereof
- C10M 2223/043 Ammonium or amine salts thereof
- C10M 2223/045 Metal containing thio derivatives
- C10M 2223/047 Thioderivatives not containing metallic elements
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