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IPC Main Group
H02K 3/00

Details of windings

Introduced: September 1968

Last revised: January 2006

Classification Context

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

Related Keywords

WINDINGS for electric machines

7 direct subcodes

Child Classifications

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  • H02K 3/02 Windings characterised by the conductor material
  • H02K 3/3 Windings characterised by the insulating material
  • H02K 3/42 Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
  • H02K 3/44 Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas

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