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DIFF Subgroup
F02C 9/16

Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057)

Introduced: January 1980

Title

Titles differ between systems:

IPC: Control of working fluid flow

CPC: Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057)

Full Title

Full titles differ between systems:

IPC:

Controlling gas-turbine plants; Controlling fuel supply in air-breathing jet-propulsion plants > Control of working fluid flow

CPC:

Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C7/057; controlling turbines F01D; controlling compressors F04D27/00; controlling in general G05) > Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057)

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1980.

Child Classifications

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  • F02C 9/18 by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages since 1980 IPC+CPC Available in IPC and CPC
  • F02C 9/24 Control of the pressure level in closed cycles 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