IPC Main Group
H01C 3/00 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- RESISTORS
Filing statistics
IPC H01C 3/00 belongs to the parent subclass H01C, which recorded 23,697 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,605 in 2013 to 2,259 in 2023 (+41%), peaking at 2,514 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
6 direct subcodes
Child Classifications
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- H01C 3/02 arranged or constructed for reducing self-induction, capacitance, or variation with frequency
- H01C 3/04 Iron-filament ballast resistors; Other resistors having variable temperature coefficient
- H01C 3/06 Flexible or folding resistors, whereby such a resistor can be looped or collapsed upon itself
- H01C 3/08 Dimension or characteristic of resistive element changing gradually or in discrete steps from one terminal to another
- H01C 3/1 the resistive element having zig-zag or sinusoidal configuration
- H01C 3/14 the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical, or toroidal winding
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