IPC Main Group
H01H 35/00 Switches operated by change of a physical condition
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
6 direct subcodes
Child Classifications
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- H01H 35/02 Switches operated by change of position, inclination, or orientation of the switch itself in relation to gravitational field
- H01H 35/06 Switches operated by change of speed
- H01H 35/14 Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
- H01H 35/18 Switches operated by change of liquid level or of liquid density, e.g. float switch
- H01H 35/24 Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H 35/42 Switches operated by change of humidity
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