IPC Subgroup
H01H 47/22 for supplying energising current for relay coil
Introduced: September 1968
Last revised: January 2006
Full Title
Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current > for supplying energising current for relay coil
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 47/24 having light-sensitive input
- H01H 47/26 having thermo-sensitive input
- H01H 47/28 Energising current supplied by discharge tube
- H01H 47/32 Energising current supplied by semiconductor device
- H01H 47/34 Energising current supplied by magnetic amplifier
- H01H 47/36 Relay coil or coils forming part of a bridge circuit
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