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DIFF Subgroup
G05D 13/30

Governors characterised by fluid features in which the speed of a shaft is converted into fluid pressure

Introduced: September 1968

Full Title

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > without auxiliary power > Governors characterised by fluid features in which the speed of a shaft is converted into fluid pressure

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

Child Classifications

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  • G05D 13/32 using a pump IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G05,2013–2023, worldwide · Source: EPO PATSTAT

  1. SIEMENS DE 4,725
  2. SGCC(STATE GRID CORPORATION OF CHINA) 4,571
  3. FANUC JP 4,233
  4. MITSUBISHI ELECTRIC CORPORATION JP 3,143
  5. FANUC 2,981
  6. ROBERT BOSCH DE 2,813
  7. CHINESE ACADEMY OF SCIENCES 2,500
  8. LG ELECTRONICS KR 2,182
  9. OMRON CORPORATION JP 2,036
  10. SAMSUNG ELECTRONICS COMPANY KR 1,981

Top Applicants (CPC)

Class G05,2013–2023, worldwide · Source: EPO PATSTAT

  1. FANUC JP 6,367
  2. SIEMENS DE 5,963
  3. FANUC 4,535
  4. MITSUBISHI ELECTRIC CORPORATION JP 4,201
  5. ROBERT BOSCH DE 4,010
  6. LG ELECTRONICS KR 3,802
  7. SAMSUNG ELECTRONICS COMPANY KR 3,143
  8. FORD GLOBAL TECHNOLOGIES US 2,889
  9. TOYOTA MOTOR CORPORATION 2,778
  10. OMRON CORPORATION JP 2,743