H01C RESISTORS
Introduced: September 1968
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- RESISTORS
Description
Resistors and resistive elements used in electrical circuits and electronic devices. This subclass covers fixed and variable resistors, thermistors, varistors, and resistive films or coatings, including their construction, materials (such as carbon, wire-wound, or metal film), and manufacturing processes. Related technologies include resistor networks, resistor arrays, and hybrid resistive assemblies integrated with other components. Adjacent classes cover resistor applications within specific circuit configurations (H01L for semiconductors) and resistive heating elements designed primarily for thermal rather than electrical control purposes.
Filing statistics
IPC subclass H01C 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
In class comparison
H01C ranks 12th of 14 subclasses with filings in H01, with 23,697 applications between 2013 and 2023, 0.6% of the class. Annual filings grew 41% from 2013 to 2023, below the class as a whole (+58%).
| Rank | Subclass | Title | Applications | Share |
|---|---|---|---|---|
| 1 | H01L | 1,327,660 | 33.2% | |
| 2 | H01M, Processes or Means, e.g. Batteries, for the Direct Conversion of Chemical Energy Into Electrical Energy | Processes or Means, e.g. Batteries, for the Direct Conversion of Chemical Energy Into Electrical Energy | 862,000 | 21.5% |
| 3 | H01R, Electrically-Conductive Connections; Structural Associations of a Plurality of Mutually-Insulated Electrical Connecting Elements; Coupling Devices; Current Collectors | Electrically-Conductive Connections; Structural Associations of a Plurality of Mutually-Insulated Electrical Connecting Elements; Coupling Devices; Current Collectors | 480,976 | 12.0% |
| 4 | H01B, Cables; Conductors; Insulators; Selection of Materials for Their Conductive, Insulating or Dielectric Properties | Cables; Conductors; Insulators; Selection of Materials for Their Conductive, Insulating or Dielectric Properties | 250,733 | 6.3% |
| 5 | H01F, Magnets; Inductances; Transformers; Selection of Materials for Their Magnetic Properties | Magnets; Inductances; Transformers; Selection of Materials for Their Magnetic Properties | 244,753 | 6.1% |
| 6 | H01H, Electric Switches; Relays; Selectors; Emergency Protective Devices | Electric Switches; Relays; Selectors; Emergency Protective Devices | 242,774 | 6.1% |
| 7 | H01Q, Antennas, i.e. Radio Aerials | Antennas, i.e. Radio Aerials | 196,719 | 4.9% |
| 8 | H01J, Electric Discharge Tubes or Discharge Lamps | Electric Discharge Tubes or Discharge Lamps | 110,789 | 2.8% |
| 9 | H01G, Capacitors; Capacitors, Rectifiers, Detectors, Switching Devices, Light-Sensitive or Temperature-Sensitive Devices of the Electrolytic Type | Capacitors; Capacitors, Rectifiers, Detectors, Switching Devices, Light-Sensitive or Temperature-Sensitive Devices of the Electrolytic Type | 104,471 | 2.6% |
| 10 | H01S, Devices Using the Process of Light Amplification by Stimulated Emission of Radiation [LASER] to Amplify or Generate Light; Devices Using Stimulated Emission of Electromagnetic Radiation in Wave Ranges Other Than Optical | Devices Using the Process of Light Amplification by Stimulated Emission of Radiation [LASER] to Amplify or Generate Light; Devices Using Stimulated Emission of Electromagnetic Radiation in Wave Ranges Other Than Optical | 85,133 | 2.1% |
| 12 | H01C | Resistors | 23,697 | 0.6% |
Source: EPO PATSTAT, worldwide filings
Additional Content
Glossary
adjustable mechanically adjustable
Limiting references
Apparatus or processes for filling or compressing insulating material in heating element tubes Resistors having potential barriers, e.g. field-effect resistors , Photoresistors and similar semiconductor devices in which radiation controls flow of current through the device Magnetic-field-controlled resistors and similar devices using galvano-magnetic or similar magnetic effects , Bulk negative resistance effect devices
Application references
Impedance networks
Related Keywords
8 direct subcodes
Child Classifications
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- H01C 1/00 Details
- H01C 10/00 Adjustable resistors
- H01C 11/00 Non-adjustable liquid resistors
- H01C 13/00 Resistors not provided for elsewhere
- H01C 17/00 Apparatus or processes specially adapted for manufacturing resistors
- H01C 3/00 Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids
- H01C 7/00 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
- H01C 8/00 Non-adjustable resistors consisting of loose powdered or granular conducting, or powdered or granular semi-conducting material
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