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CPC Subgroup
F21V 29/502

characterised by the adaptation for cooling of specific components

Full Title

Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems (lighting fixtures combined with outlets for air-treatment systems F24F13/078) > Cooling arrangements (air-treatment systems dissipating or using the heat of lighting fixtures F24F3/056) > characterised by the adaptation for cooling of specific components

6 direct subcodes

Child Classifications

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  • F21V 29/503 of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858)
  • F21V 29/504 of refractors
  • F21V 29/505 of reflectors
  • F21V 29/506 of globes, bowls or cover glasses
  • F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
  • F21V 29/508 of electrical circuits

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