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IPC Subgroup
H02K 23/26

characterised by the armature windings

Introduced: September 1968

Last revised: January 2006

Full Title

DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors > characterised by the armature windings

Classification Context

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

6 direct subcodes

Child Classifications

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  • H02K 23/28 having open windings, i.e. not closed within the armatures
  • H02K 23/3 having lap or loop windings
  • H02K 23/32 having wave or undulating winding
  • H02K 23/34 having mixed windings
  • H02K 23/36 having two or more windings; having two or more commutators; having two or more stators
  • H02K 23/38 having winding or connection for improving commutation, e.g. equipotential connection

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