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DIFF Subgroup
C10B 21/10

Regulating and controlling the combustion

Introduced: September 1968

Title

Titles differ between systems:

IPC: Regulating or controlling the combustion

CPC: Regulating and controlling the combustion

Full Title

Full titles differ between systems:

IPC:

Heating of coke ovens with combustible gases > Regulating or controlling the combustion

CPC:

Heating of coke ovens with combustible gases > Regulating and controlling the combustion

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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  • C10B 21/12 Burners IPC+CPC Available in IPC and CPC
  • C10B 21/14 Devices for reversing the draught IPC+CPC Available in IPC and CPC
  • C10B 21/16 by controlling or varying the openings between the heating flues and the regenerator flues IPC+CPC Available in IPC and CPC
  • C10B 21/18 Recirculating the flue gases 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