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DIFF Subgroup
F02C 3/04

having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16)

Introduced: September 1968

Title

Titles differ between systems:

IPC: having a turbine driving a compressor

CPC: having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16)

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

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)

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • F02C 3/055 the compressor being of the positive-displacement type since 1980 IPC+CPC Available in IPC and CPC
  • F02C 3/13 having variable working fluid interconnections between turbines or compressors or stages of different rotors since 1990 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