Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Main Group
G03C 7/00

Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes (diffusion transfer processes G03C8/00)

10 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • G03C 7/02 Direct bleach-out processes; Materials therefor; Preparing or processing such materials
  • G03C 7/14 Additive processes using lenticular screens; Materials therefor; Preparing or processing such materials
  • G03C 7/18 Processes for the correction of the colour image in subtractive colour photography (using coloured couplers G03C7/333)
  • G03C 7/20 Subtractive colour processes using differently sensitised films, each coated on its own base, e.g. bipacks, tripacks
  • G03C 7/26 Silver halide emulsions for subtractive colour processes (G03C7/28 - G03C7/30 take precedence)
  • G03C 7/46 Subtractive processes not covered by the group G03C7/26; Materials therefor; Preparing or processing such materials

Top Applicants

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

  1. CANON JP 19,215
  2. CANON 12,916
  3. ASML NETHERLANDS NL 10,000
  4. FUJIFILM JP 7,814
  5. SAMSUNG ELECTRONICS COMPANY KR 5,181
  6. CARL ZEISS SMT DE 5,079
  7. RICOH COMPANY JP 4,343
  8. LG INNOTEK COMPANY KR 4,054
  9. KYOCERA DOCUMENT SOLUTIONS 3,812
  10. KYOCERA DOCUMENT SOLUTIONS JP 3,682