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DIFF Subgroup
H02K 21/18

having horse-shoe armature cores (with homopolar co-operation H02K21/20)

Introduced: September 1968

Title

Titles differ between systems:

IPC: having horse-shoe armature cores

CPC: having horse-shoe armature cores (with homopolar co-operation H02K21/20)

Full Title

Full titles differ between systems:

IPC:

Synchronous motors having permanent magnets; Synchronous generators having permanent magnets > with stationary armatures and rotating magnets > with magnets rotating within the armatures > having horse-shoe armature cores

CPC:

Synchronous motors having permanent magnets; Synchronous generators having permanent magnets > with stationary armatures and rotating magnets > with magnets rotating within the armatures > having horse-shoe armature cores (with homopolar co-operation H02K21/20)

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349