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DIFF Subgroup
F16H 61/40

hydrostatic

Introduced: January 1990

Full Title

Control functions within change-speed- or reversing-gearings for conveying rotary motion > Control of exclusively fluid gearing > hydrostatic

IPC and CPC are identically structured here. All 15 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1990.

Child Classifications

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  • F16H 61/4035 Control of circuit flow since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4061 Control related to directional control valves, e.g. change-over valves, for crossing the feeding conduits since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4069 Valves related to the control of neutral, e.g. shut off valves since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4148 Open loop circuits since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4157 Control of braking, e.g. preventing pump over-speeding when motor acts as a pump since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4165 Control of cooling or lubricating since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4174 Control of venting, e.g. removing trapped air since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4183 Preventing or reducing vibrations or noise, e.g. avoiding cavitations since 2010 IPC+CPC Available in IPC and CPC
  • F16H 61/4192 Detecting malfunction or potential malfunction, e.g. fail safe since 2010 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

  1. SCHAEFFLER TECHNOLOGIES & COMPANY DE 21,545
  2. ZAHNRADFABRIK FRIEDRICHSHAFEN DE 9,446
  3. TOYOTA MOTOR CORPORATION 7,215
  4. HYUNDAI MOTOR COMPANY KR 6,846
  5. ROBERT BOSCH DE 6,106
  6. NTN CORPORATION 5,305
  7. SKF SE 4,219
  8. KIA MOTORS CORPORATION KR 3,852
  9. NSK 3,850
  10. HONDA MOTOR COMPANY 3,639

Top Applicants (CPC)

Class F16,2013–2023, worldwide · Source: EPO PATSTAT

  1. SCHAEFFLER TECHNOLOGIES & COMPANY DE 22,817
  2. ZAHNRADFABRIK FRIEDRICHSHAFEN DE 10,523
  3. HYUNDAI MOTOR COMPANY KR 7,933
  4. ROBERT BOSCH DE 7,059
  5. KIA MOTORS CORPORATION KR 4,867
  6. SKF SE 4,729
  7. TOYOTA MOTOR CORPORATION JP 4,111
  8. FORD GLOBAL TECHNOLOGIES US 3,838
  9. GM GLOBAL TECHNOLOGY OPERATIONS US 3,575
  10. TOYOTA MOTOR CORPORATION 3,499