IPC Subgroup
H01C 7/1 voltage responsive, i.e. varistors
Introduced: September 1968
Last revised: January 2006
Full Title
Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material > voltage responsive, i.e. varistors
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- RESISTORS
Related Keywords
VARISTORS
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H01C 7/102 Varistor boundary, e.g. surface layers
- H01C 7/105 Varistor cores
- H01C 7/12 Overvoltage protection resistors; Arresters
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