Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers

Filing statistics

CPC F21K 9/00 belongs to the parent subclass F21K, which recorded 35,490 patent applications worldwide between 2013 and 2023. Annual filings declined from 5,122 in 2013 to 1,262 in 2023 (-75%). The most active applicants in class F21 are VALEO VISION (2,820 applications), SIGNIFY HOLDING (2,374 applications) and KOITO MANUFACTURING COMPANY (1,890 applications).

Source: EPO PATSTAT, worldwide filings

3 direct subcodes

Child Classifications

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F21K 9/20 Light sources comprising attachment means
F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
F21K 9/90 Methods of manufacture

Top Applicants

Top 10 applicants by patent filingsfor class F21, 2013–2023, worldwide · Source: EPO PATSTAT

VALEO VISION FR 2,820
SIGNIFY HOLDING NL 2,374
KOITO MANUFACTURING COMPANY JP 1,890
KOITO MANUFACTURING COMPANY 1,722
LG INNOTEK COMPANY KR 1,624
OSRAM DE 1,507
LG ELECTRONICS KR 1,458
PANASONIC INTELLECTUAL PROPERTY JP 1,433
ZUMTOBEL LIGHTING AT 1,349
PANASONIC INTELLECTUAL PROPERTY 1,275