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PCE
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DIFF Subgroup
G05D 13/48

involving resilient restoring mechanisms

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > with auxiliary non-electric power > using regulating devices with proportional band and integral action, i.e. P.I. regulating devices > involving resilient restoring mechanisms

CPC:

Control of linear speed; Control of angular speed; Control of acceleration or deceleration, e.g. of a prime mover > with auxiliary non-electric power > using regulating devices with proportional band and integral action, i.e. PI regulating devices > involving resilient restoring mechanisms

No child classifications to compare. This is a leaf node in both 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