Apparatus or processes adapted to the manufacture, installing, removal or maintenance of incandescent lamps or parts thereof

Introduced: September 1968

Last revised: January 2006

Classification Context

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

Filing statistics

IPC H01K 3/00 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

11 direct subcodes

Child Classifications

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H01K 3/02 Manufacture of incandescent bodies
H01K 3/06 Attaching of incandescent bodies to mount
H01K 3/08 Manufacture of mounts or stems
H01K 3/12 Joining of mount or stem to vessel; Joining parts of the vessel, e.g. by butt sealing
H01K 3/16 Joining of caps to vessel
H01K 3/2 Sealing-in wires directly into the envelope
H01K 3/22 Exhausting, degassing, filling, or cleaning vessels
H01K 3/26 Closing of vessels
H01K 3/28 Machines having sequentially arranged operating stations
H01K 3/3 Repairing or regenerating used or defective lamps
H01K 3/32 Auxiliary devices for cleaning, placing, or removing incandescent lamps

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