IPC Subgroup
H02K 9/04 having means for generating a flow of cooling medium
Introduced: September 1968
Last revised: January 2006
Full Title
Arrangements for cooling or ventilating > by ambient air flowing through the machine > having means for generating a flow of cooling medium
Classification Context
- Section:
- ELECTRICITY
- Class:
- GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
- Subclass:
- DYNAMO-ELECTRIC MACHINES
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- H02K 9/06 with fans or impellers driven by the machine shaft
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