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IPC Subgroup
H02K 33/12

with armatures moving in alternate directions by alternate energisation of two coil systems

Introduced: September 1968

Last revised: January 2006

Full Title

Motors with reciprocating, oscillating or vibrating magnet, armature or coil system > with armatures moving in alternate directions by alternate energisation of two coil systems

Classification Context

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

1 direct subcode

Child Classifications

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  • H02K 33/14 wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armatures

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