Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
H02K 27/04

having single-phase operation in series or shunt connection

Introduced: September 1968

Last revised: January 2006

Full Title

AC commutator motors or generators having mechanical commutator > having single-phase operation in series or shunt connection

Classification Context

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

3 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • H02K 27/06 with a single or multiple short-circuited commutator, e.g. repulsion motor
  • H02K 27/08 with multiple-fed armature
  • H02K 27/1 with switching devices for different modes of operation, e.g. repulsion-induction motor

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