CPC Main Group
H02K 23/00 DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
13 direct subcodes
Child Classifications
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- H02K 23/02 characterised by arrangement for exciting
- H02K 23/26 characterised by the armature windings
- H02K 23/40 characterised by the arrangement of the magnet circuits
- H02K 23/50 Generators with two or more outputs
- H02K 23/52 Motors acting also as generators, e.g. starting motors used as generators for ignition or lighting
- H02K 23/54 Disc armature motors or generators
- H02K 23/56 Motors or generators having iron cores separated from armature winding
- H02K 23/58 Motors or generators without iron cores
- H02K 23/60 Motors or generators having rotating armatures and rotating excitation field
- H02K 23/62 Motors or generators with stationary armatures and rotating excitation field
- H02K 23/64 Motors specially adapted for running on DC or AC by choice
- H02K 23/66 Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedances or switches
- H02K 23/68 Structural association with auxiliary mechanical devices, e.g. with clutches or brakes
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 24,515
- MITSUBISHI ELECTRIC CORPORATION JP 11,346
- SIEMENS DE 9,026
- ROBERT BOSCH DE 9,005
- SAMSUNG ELECTRONICS COMPANY KR 6,729
- GUANGDONG POWER GRID CORPORATION 5,740
- DENSO CORPORATION JP 5,077
- LG ELECTRONICS KR 5,041
- LG INNOTEK COMPANY KR 4,442
- TOYOTA MOTOR CORPORATION 4,349