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DIFF Subgroup
C10G 73/02

Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils

Introduced: January 1980

Title

Titles differ between systems:

IPC: Recovery of petroleum waxes from hydrocarbon oils; De-waxing of hydrocarbon oils

CPC: Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils

Full Title

Full titles differ between systems:

IPC:

Recovery or refining of mineral waxes, e.g. montan wax > Recovery of petroleum waxes from hydrocarbon oils; De-waxing of hydrocarbon oils

CPC:

Recovery or refining of mineral waxes, e.g. montan wax (compositions essentially based on waxes C08L91/00) > Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils

Of 9 combined children, 8 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • C10G 73/025 CPC only CPC only
  • C10G 73/04 with the use of filter aids since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/24 by formation of adducts since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/26 by flotation since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/28 by centrifugal force since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/30 with electric means since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/32 Methods of cooling during dewaxing since 1980 IPC+CPC Available in IPC and CPC
  • C10G 73/34 Controlling or regulating since 1980 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