Air-break switches for high tension without arc-extinguishing or arc-preventing means

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 31/00 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

4 direct subcodes

Child Classifications

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H01H 31/02 Details
H01H 31/14 with bridging contact that is not electrically connected to either line contact in open position of switch
H01H 31/26 with movable contact that remains electrically connected to one line in open position of switch
H01H 31/34 with movable contact adapted to engage an overhead transmission line, e.g. for branching

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