IPC Subgroup
F21W 131/4 Lighting for industrial, commercial, recreational or military use
Introduced: January 2000
Last revised: January 2006
Full Title
Use or application of lighting devices or systems not provided for in groups > Lighting for industrial, commercial, recreational or military use
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- LIGHTING
- Subclass:
- INDEXING SCHEME ASSOCIATED WITH SUBCLASSES , , and , RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
8 direct subcodes
Child Classifications
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- F21W 131/401 for swimming pools
- F21W 131/402 for working places
- F21W 131/403 for machines
- F21W 131/405 for shop-windows or displays
- F21W 131/406 for theatres, stages or film studios
- F21W 131/407 for indoor arenas
- F21W 131/409 for furnaces or kilns
- F21W 131/411 for inspection of the interior of hollow structures, e.g. vessels, tubes
Top Applicants
Top 10 applicants by patent filingsfor class F21, 2013–2023, worldwide · Source: EPO PATSTAT
- PANASONIC INTELLECTUAL PROPERTY 3,883
- VALEO VISION FR 2,797
- KOITO MANUFACTURING COMPANY 2,531
- OPPLE LIGHTING COMPANY 2,343
- SIGNIFY HOLDING NL 2,275
- TOSHIBA LIGHTING & TECHNOLOGY CORPORATION 1,982
- KOITO MANUFACTURING COMPANY JP 1,766
- LG INNOTEK COMPANY KR 1,651
- SUZHOU OPPLE LIGHTING COMPANY 1,633
- MITSUBISHI ELECTRIC CORPORATION 1,591