Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
F02M 23/00

Apparatus for adding secondary air to fuel-air mixture

Introduced: September 1968

CPC subdivides this area 2x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

  • F02M 2023/008 2nd only CPC only CPC only
  • F02M 23/001 CPC only CPC only
  • F02M 23/003 CPC only CPC only
  • F02M 23/005 CPC only CPC only
  • F02M 23/006 CPC only CPC only
  • F02M 23/12 characterised by being combined with device for, or by secondary air effecting, re-atomising of condensed fuel IPC+CPC Available in IPC and CPC
  • F02M 23/14 characterised by adding hot air IPC+CPC Available in 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