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IPC Main Group
H02K 1/00

Details of the magnetic circuit

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
ELECTRICITY
Class:
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
Subclass:
DYNAMO-ELECTRIC MACHINES

Additional Content

Magnetic circuits for transformers for power supply Magnetic circuits for relays

3 direct subcodes

Child Classifications

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  • H02K 1/02 characterised by the magnetic material
  • H02K 1/04 characterised by the material used for insulating the magnetic circuit or parts thereof

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