F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
Full Title
Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers > Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
Filing statistics
CPC F21K 9/60 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
7 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- F21K 9/61 using light guides
- F21K 9/62 using mixing chambers, e.g. housings with reflective walls
- F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts
- F21K 9/66 Details of globes or covers forming part of the light source
- F21K 9/68 Details of reflectors forming part of the light source
- F21K 9/69 Details of refractors forming part of the light source
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