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IPC Subgroup
H02P 5/52

additionally providing control of relative angular displacement

Introduced: September 1968

Last revised: January 2016

Full Title

Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors > for speed regulation of two or more dynamo-electric motors in relation to one another > additionally providing control of relative angular displacement

Classification Context

Section:
ELECTRICITY
Class:
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
Subclass:
CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

2 direct subcodes

Child Classifications

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  • H02P 5/54 Speed and position comparison between the motors by mechanical means
  • H02P 5/56 Speed and position comparison between the motors by electrical means

Top Applicants

Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 54,496
  2. MITSUBISHI ELECTRIC CORPORATION JP 10,495
  3. TOYOTA MOTOR CORPORATION 9,464
  4. GUANGDONG POWER GRID CORPORATION 9,339
  5. ROBERT BOSCH DE 8,226
  6. SIEMENS DE 8,218
  7. DENSO CORPORATION 7,063
  8. MITSUBISHI ELECTRIC CORPORATION 6,619
  9. SAMSUNG ELECTRONICS COMPANY KR 5,826
  10. GREE ELECTRIC APPLIANCES 5,094