H01K ELECTRIC INCANDESCENT LAMPS
Introduced: September 1968
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC INCANDESCENT LAMPS
Description
H01K covers the design, construction, and technical aspects of electric incandescent lamps, including filament materials, lamp envelopes, base designs, and internal structures. This classification encompasses traditional tungsten filament bulbs, halogen incandescent lamps, and various lamp configurations for general lighting and specialized applications. Related thermal radiation generation methods and specific lamp control systems are generally found in adjacent classes, while discharge lamps and solid-state lighting devices are classified separately.
Filing statistics
IPC subclass H01K recorded 2,283 patent applications worldwide between 2013 and 2023. Annual filings declined from 366 in 2013 to 105 in 2023 (-71%). 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
H01K ranks 14th of 14 subclasses with filings in H01, with 2,283 applications between 2013 and 2023, 0.1% of the class. Annual filings declined 71% 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% |
| 14 | H01K | Electric Incandescent Lamps | 2,283 | 0.1% |
Source: EPO PATSTAT, worldwide filings
Additional Content
Glossary
Lamp lamps "Lamp" includes tubes emitting ultra-violet or infra-red light.
Limiting references
Details or apparatus or processes for manufacture applicable to both discharge devices and incandescent lamps Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight Lamps with spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamps Electric light sources using a combination of incandescent and other types of light generation
Application references
Functional features or details of lighting devices or systems thereof Structural combinations of lighting devices with other articles, not otherwise provided for Incandescent filaments used to form characters in indicating arrangements
Related Keywords
7 direct subcodes
Child Classifications
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- H01K 1/00 Details
- H01K 11/00 Lamps having an incandescent body which is not conductively heated, e.g. heated inductively, heated by electronic discharge
- H01K 13/00 Lamps having an incandescent body which is substantially non-conductive until heated, e.g. Nernst lamp
- H01K 3/00 Apparatus or processes adapted to the manufacture, installing, removal or maintenance of incandescent lamps or parts thereof
- H01K 5/00 Lamps for general lighting
- H01K 7/00 Lamps for purposes other than general lighting
- H01K 9/00 Lamps having two or more incandescent bodies separately heated
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