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CPC Subgroup
G03C 1/64

Compositions containing iron compounds as photosensitive substances

Full Title

Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04) > Compositions containing iron compounds as photosensitive substances

Filing statistics

CPC G03C 1/64 belongs to the parent subclass G03C, which recorded 1,200 patent applications worldwide between 2013 and 2023. Annual filings declined from 187 in 2013 to 34 in 2023 (-82%). The most active applicants in class G03 are CANON (19,215 applications), CANON (12,916 applications) and ASML NETHERLANDS (10,000 applications).

Source: EPO PATSTAT, worldwide filings

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