IPC Main Group
H01H 43/00 Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operation after the programme is completed
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 43/00 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
Related Keywords
time- PROGRAMME switchestiming by electric switches
5 direct subcodes
Child Classifications
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- H01H 43/02 Details
- H01H 43/1 with timing of actuation of contacts due to a part rotating at substantially constant speed
- H01H 43/24 with timing of actuation of contacts due to a non-rotatably moving part
- H01H 43/3 with timing of actuation of contacts due to thermal action
- H01H 43/32 with timing of actuation of contacts due to electrolytic processes; with timing of actuation of contacts due to chemical processes
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