IPC Main Group
H01K 1/00 Details
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC INCANDESCENT LAMPS
13 direct subcodes
Child Classifications
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- H01K 1/02 Incandescent bodies
- H01K 1/18 Mountings or supports for the incandescent body
- H01K 1/26 Screens; Filters
- H01K 1/28 Envelopes; Vessels
- H01K 1/36 Seals between parts of vessel, e.g. between stem and envelope
- H01K 1/38 Seals for leading-in conductors
- H01K 1/4 Leading-in conductors
- H01K 1/42 Means forming part of the lamp for the purpose of providing electrical connection to, or support for, the lamp
- H01K 1/5 Selection of substances for gas fillings; Specified pressure thereof
- H01K 1/52 Means for obtaining or maintaining the desired pressure within the vessel
- H01K 1/58 Cooling arrangements
- H01K 1/6 Means structurally associated with the lamp for indicating defects or previous use
- H01K 1/62 One or more circuit elements structurally associated with the lamp
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