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DIFF Subgroup
F02C 3/06

the compressor comprising only axial stages (F02C3/10 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: the compressor comprising only axial stages

CPC: the compressor comprising only axial stages (F02C3/10 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Gas-turbine plants characterised by the use of combustion products as the working fluid > having a turbine driving a compressor > the compressor comprising only axial stages

CPC:

Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C5/00) > having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) > the compressor comprising only axial stages (F02C3/10 takes precedence)

Of 4 combined children, 2 exist in both systems.

2 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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  • F02C 3/062 CPC only CPC only
  • F02C 3/064 CPC only CPC only
  • F02C 3/067 having counter-rotating rotors (F02C3/073 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
  • F02C 3/073 the compressor and turbine stages being concentric since 1980 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