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CPC Subgroup
F21K 9/66

Details of globes or covers forming part of the light source

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 > Details of globes or covers forming part of the light source

Filing statistics

CPC F21K 9/66 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

Top Applicants

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

  1. VALEO VISION FR 2,820
  2. SIGNIFY HOLDING NL 2,374
  3. KOITO MANUFACTURING COMPANY JP 1,890
  4. KOITO MANUFACTURING COMPANY 1,722
  5. LG INNOTEK COMPANY KR 1,624
  6. OSRAM DE 1,507
  7. LG ELECTRONICS KR 1,458
  8. PANASONIC INTELLECTUAL PROPERTY JP 1,433
  9. ZUMTOBEL LIGHTING AT 1,349
  10. PANASONIC INTELLECTUAL PROPERTY 1,275