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DIFF Main Group
G03C 1/00

Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Photosensitive materials

CPC: Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04)

Full Title

Full titles differ between systems:

IPC:

Photosensitive materials

CPC:

Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04)

Of 15 combined children, 14 exist in both systems.

1 codes are CPC-only extensions.

8 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • G03C 1/002 CPC only CPC only
  • G03C 1/50 Compositions containing noble metal salts other than silver salts, as photosensitive substances IPC+CPC Available in IPC and CPC
  • G03C 1/64 Compositions containing iron compounds as photosensitive substances IPC+CPC Available in IPC and CPC
  • G03C 1/66 Compositions containing chromates as photosensitive substances IPC+CPC Available in IPC and CPC
  • G03C 1/67 Compositions containing cobalt salts or cobalt compounds as photosensitive substances since 1990 IPC+CPC Available in IPC and CPC
  • G03C 1/675 Compositions containing polyhalogenated compounds as photosensitive substances (for photopolymerisable or photocrosslinkable compositions G03F7/028, covered by G03C1/72) since 1990 IPC+CPC Available in IPC and CPC
  • G03C 1/685 Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances since 1990 IPC+CPC Available in IPC and CPC
  • G03C 1/695 Compositions containing azides as the photosensitive substances (for photopolymerisable or photocrosslinkable compositions G03F7/008) since 1990 IPC+CPC Available in IPC and CPC
  • G03C 1/705 Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems (used as photoresist G03F7/004) since 1990 IPC+CPC Available in 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