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
Filing statistics
IPC H01H 35/00 belongs to the parent subclass H01H, which recorded 242,774 patent applications worldwide between 2013 and 2023. Annual filings grew from 16,532 in 2013 to 24,974 in 2023 (+51%), peaking at 27,753 applications in 2020. The most active applicants in class H01 are TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (43,574 applications), SAMSUNG ELECTRONICS COMPANY (42,206 applications) and LG CHEM (21,383 applications).
Source: EPO PATSTAT, worldwide filings
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