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IPC Subgroup
H02K 21/38

with rotating flux distributors, and armatures and magnets both stationary

Introduced: September 1968

Last revised: January 2006

Full Title

Synchronous motors having permanent magnets; Synchronous generators having permanent magnets > with rotating flux distributors, and armatures and magnets both stationary

Classification Context

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

3 direct subcodes

Child Classifications

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  • H02K 21/4 with flux distributors rotating around the magnets and within the armatures
  • H02K 21/42 with flux distributors rotating around the armatures and within the magnets
  • H02K 21/44 with armature windings wound upon the magnets

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