Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
IPC Subgroup
G03C 1/815

characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching agents

Introduced: January 1990

Last revised: January 2006

Full Title

Photosensitive materials > Photosensitive materials characterised by the base or auxiliary layers > characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching agents

Classification Context

Section:
PHYSICS
Class:
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
Subclass:
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR OR STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY

Related Keywords

FILTER(S) layers in photosensitive materials

Top Applicants

Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CANON 31,416
  2. CANON JP 17,469
  3. KYOCERA DOCUMENT SOLUTIONS 9,845
  4. RICOH COMPANY 9,807
  5. ASML NETHERLANDS NL 9,427
  6. FUJIFILM JP 7,225
  7. KONICA MINOLTA CORPORATION 7,216
  8. FUJI XEROX COMPANY 5,711
  9. CARL ZEISS SMT DE 4,971
  10. RICOH COMPANY JP 4,123