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DIFF Subgroup
G03C 8/22

Reduction of the chromogenic substance

Introduced: January 1990

Full Title

Full titles differ between systems:

IPC:

Diffusion transfer processes or agents therefor; Photosensitive materials for such processes > Photosensitive materials characterised by the image-forming section > the substances transferred by diffusion consisting of organic compounds > of dyes or their precursors > characterised by the release mechanism > Reduction of the chromogenic substance

CPC:

Diffusion transfer processes or agents therefor; Photosensitive materials for such processes > Photosensitive materials characterised by the image-forming section > the substances transferred by diffusion consisting of organic compounds (G03C8/04 takes precedence) > of dyes or their precursors > characterised by the releasing mechanism > Reduction of the chromogenic substance

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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