IPC Main Group
H01H 50/00 Details of electromagnetic relays
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
10 direct subcodes
Child Classifications
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- H01H 50/02 Bases; Casings; Covers
- H01H 50/08 Indicators; Distinguishing marks
- H01H 50/1 Electromagnetic or electrostatic shielding
- H01H 50/12 Ventilating; Cooling; Heating
- H01H 50/14 Terminal arrangements
- H01H 50/16 Magnetic circuit arrangements
- H01H 50/44 Magnetic coils or windings
- H01H 50/54 Contact arrangements
- H01H 50/64 Driving arrangements between movable part of magnetic circuit and contact
- H01H 50/86 Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
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