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PCE
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DIFF Subgroup
F21K 9/60

Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction

Introduced: January 2016

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

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

IPC defines codes here since 2016.

Child Classifications

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  • F21K 9/61 using light guides since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/62 using mixing chambers, e.g. housings with reflective walls since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/65 specially adapted for changing the characteristics or the distribution of the light, e.g. by adjustment of parts since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/66 Details of globes or covers forming part of the light source since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/68 Details of reflectors forming part of the light source since 2016 IPC+CPC Available in IPC and CPC
  • F21K 9/69 Details of refractors forming part of the light source since 2016 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class F21,2013–2023, worldwide · Source: EPO PATSTAT

  1. PANASONIC INTELLECTUAL PROPERTY 3,883
  2. VALEO VISION FR 2,797
  3. KOITO MANUFACTURING COMPANY 2,531
  4. OPPLE LIGHTING COMPANY 2,343
  5. SIGNIFY HOLDING NL 2,275
  6. TOSHIBA LIGHTING & TECHNOLOGY CORPORATION 1,982
  7. KOITO MANUFACTURING COMPANY JP 1,766
  8. LG INNOTEK COMPANY KR 1,651
  9. SUZHOU OPPLE LIGHTING COMPANY 1,633
  10. MITSUBISHI ELECTRIC CORPORATION 1,591

Top Applicants (CPC)

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