IPC Main Group
H02K 3/00 Details of windings
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- DYNAMO-ELECTRIC MACHINES
Related Keywords
WINDINGS for electric machines
7 direct subcodes
Child Classifications
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- H02K 3/02 Windings characterised by the conductor material
- H02K 3/04 Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K 3/3 Windings characterised by the insulating material
- H02K 3/32 Windings characterised by the shape, form or construction of the insulation
- H02K 3/42 Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
- H02K 3/44 Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
- H02K 3/46 Fastening of windings on the stator or rotor structure
Top Applicants
Top 10 applicants by patent filingsfor class H02, 2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 54,496
- MITSUBISHI ELECTRIC CORPORATION JP 10,495
- TOYOTA MOTOR CORPORATION 9,464
- GUANGDONG POWER GRID CORPORATION 9,339
- ROBERT BOSCH DE 8,226
- SIEMENS DE 8,218
- DENSO CORPORATION 7,063
- MITSUBISHI ELECTRIC CORPORATION 6,619
- SAMSUNG ELECTRONICS COMPANY KR 5,826
- GREE ELECTRIC APPLIANCES 5,094