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IPC Subgroup
G03C 7/3

Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials

Introduced: September 1968

Last revised: January 2006

Full Title

Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes > Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials

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

Filing statistics

IPC G03C 7/3 belongs to the parent subclass G03C, which recorded 1,220 patent applications worldwide between 2013 and 2023. Annual filings declined from 148 in 2013 to 73 in 2023 (-51%), peaking at 167 applications in 2014. The most active applicants in class G03 are CANON (31,416 applications), CANON (17,469 applications) and KYOCERA DOCUMENT SOLUTIONS (9,845 applications).

Source: EPO PATSTAT, worldwide filings

7 direct subcodes

Child Classifications

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  • G03C 7/305 Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers
  • G03C 7/388 Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor
  • G03C 7/42 Bleach-fixing or agents therefor
  • G03C 7/44 Regeneration; Replenishers

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