CPC Subgroup
G03C 1/815 characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching (for photoprinting G03C5/10; for intensifying X-ray images G03C5/17)
Full Title
Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04) > Photosensitive materials characterised by the base or auxiliary layers > characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching (for photoprinting G03C5/10; for intensifying X-ray images G03C5/17)
1 direct subcode
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT
- CANON JP 19,215
- CANON 12,916
- ASML NETHERLANDS NL 10,000
- FUJIFILM JP 7,814
- SAMSUNG ELECTRONICS COMPANY KR 5,181
- CARL ZEISS SMT DE 5,079
- RICOH COMPANY JP 4,343
- LG INNOTEK COMPANY KR 4,054
- KYOCERA DOCUMENT SOLUTIONS 3,812
- KYOCERA DOCUMENT SOLUTIONS JP 3,682