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DIFF Subgroup
C10M 105/32

Esters

Introduced: January 1985

Full Title

Lubricating compositions characterised by the base-material being a non-macromolecular organic compound > containing oxygen > Esters

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • C10M 105/34 of monocarboxylic acids since 1985 IPC+CPC Available in IPC and CPC
  • C10M 105/36 of polycarboxylic acids since 1985 IPC+CPC Available in IPC and CPC
  • C10M 105/38 of polyhydroxy compounds since 1985 IPC+CPC Available in IPC and CPC
  • C10M 105/40 containing free hydroxy or carboxyl groups since 1985 IPC+CPC Available in IPC and CPC
  • C10M 105/48 of carbonic acid since 1985 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C10,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 8,875
  2. SAUDI ARABIAN OIL COMPANY SA 2,245
  3. PETROCHINA COMPANY 2,028
  4. EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 1,980
  5. IFPEN (IFP ENERGIES NOUVELLES) FR 1,963
  6. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 1,878
  7. CHINESE ACADEMY OF SCIENCES 1,829
  8. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 1,787
  9. LUBRIZOL CORPORATION US 1,277
  10. BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,268

Top Applicants (CPC)

Class C10,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 5,831
  2. SAUDI ARABIAN OIL COMPANY SA 2,918
  3. IFPEN (IFP ENERGIES NOUVELLES) FR 2,305
  4. EXXONMOBIL RESEARCH AND ENGINEERING COMPANY US 2,282
  5. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,268
  6. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NL 2,124
  7. BASF (BADISCHE ANILIN & SODA FABRIK) DE 1,487
  8. CHEVRON CORPORATION US 1,400
  9. PETROCHINA COMPANY 1,372
  10. LUBRIZOL CORPORATION US 1,324