IPC Subgroup
H01H 9/2 Interlocking, locking, or latching mechanisms
Introduced: September 1968
Last revised: January 2006
Full Title
Details of switching devices, not covered by groups > Interlocking, locking, or latching mechanisms
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
Related Keywords
INTERLOCKING of electric switches
4 direct subcodes
Child Classifications
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- H01H 9/22 for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
- H01H 9/24 for interlocking two or more parts of the mechanism for operating contacts
- H01H 9/26 for interlocking two or more switches
- H01H 9/28 for locking switch parts by a key or equivalent removable member
Top Applicants
Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
- SAMSUNG ELECTRONICS COMPANY KR 42,206
- LG CHEM KR 21,383
- APPLIED MATERIALS US 20,441
- LG ENERGY SOLUTION KR 20,279
- SAMSUNG DISPLAY KR 19,725
- CHINESE ACADEMY OF SCIENCES 19,400
- TOYOTA MOTOR CORPORATION 18,819
- SGCC(STATE GRID CORPORATION OF CHINA) 18,082
- TOKYO ELECTRON JP 17,634