Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
H02K 23/00

DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors

Introduced: September 1968

IPC and CPC are identically structured here. All 13 subcodes exist in both systems.

Child Classifications

Navigate with arrow keys, Enter to open

  • H02K 23/50 Generators with two or more outputs IPC+CPC Available in IPC and CPC
  • H02K 23/52 Motors acting also as generators, e.g. starting motors used as generators for ignition or lighting IPC+CPC Available in IPC and CPC
  • H02K 23/54 Disc armature motors or generators IPC+CPC Available in IPC and CPC
  • H02K 23/56 Motors or generators having iron cores separated from armature winding IPC+CPC Available in IPC and CPC
  • H02K 23/58 Motors or generators without iron cores IPC+CPC Available in IPC and CPC
  • H02K 23/60 Motors or generators having rotating armatures and rotating excitation field IPC+CPC Available in IPC and CPC
  • H02K 23/62 Motors or generators with stationary armatures and rotating excitation field IPC+CPC Available in IPC and CPC
  • H02K 23/64 Motors specially adapted for running on DC or AC by choice IPC+CPC Available in IPC and CPC
  • H02K 23/66 Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches IPC+CPC Available in IPC and CPC
  • H02K 23/68 Structural association with auxiliary mechanical devices, e.g. with clutches or brakes IPC+CPC Available in IPC and CPC

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