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DIFF Subgroup
F02D 21/10

having secondary air added to the fuel-air mixture

Introduced: September 1968

Title

Titles differ between systems:

IPC: having secondary air added to fuel-air mixture

CPC: having secondary air added to the fuel-air mixture

Full Title

Full titles differ between systems:

IPC:

Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas > peculiar to engines having other non-fuel gas added to combustion-air > having secondary air added to fuel-air mixture

CPC:

Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas > peculiar to engines having other non-fuel gas added to combustion air > having secondary air added to the fuel-air mixture

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class F02,2013–2023, worldwide · Source: EPO PATSTAT

  1. TOYOTA MOTOR CORPORATION 8,687
  2. ROBERT BOSCH DE 8,328
  3. FORD GLOBAL TECHNOLOGIES US 7,423
  4. GE (GENERAL ELECTRIC COMPANY) US 5,732
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,592
  6. HYUNDAI MOTOR COMPANY KR 4,699
  7. TOYOTA MOTOR CORPORATION JP 4,541
  8. DENSO CORPORATION 3,711
  9. WEICHAI POWER COMPANY 3,486
  10. SAFRAN AIRCRAFT ENGINES FR 3,249

Top Applicants (CPC)

Class F02,2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 8,801
  2. FORD GLOBAL TECHNOLOGIES US 8,171
  3. GE (GENERAL ELECTRIC COMPANY) US 6,957
  4. HYUNDAI MOTOR COMPANY KR 5,390
  5. UNITED TECHNOLOGIES CORPORATION (UTC) US 5,250
  6. TOYOTA MOTOR CORPORATION JP 5,214
  7. TOYOTA MOTOR CORPORATION 4,149
  8. DENSO CORPORATION JP 3,400
  9. KIA MOTORS CORPORATION KR 3,388
  10. SAFRAN AIRCRAFT ENGINES FR 3,332