Details

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: ELECTRIC INCANDESCENT LAMPS

Filing statistics

IPC H01K 1/00 belongs to the parent subclass H01K, which 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

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