G03C 7/30 Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
Introduced: September 1968
Full Title
Full titles differ between systems:
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
Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes (diffusion transfer processes G03C8/00) > Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
Of 14 combined children, 7 exist in both systems.
7 codes are CPC-only extensions.
3 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G03C 7/305 Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers (G03C7/388 takes precedence ) since 1990 +5 CPC IPC+CPC Available in IPC and CPC
- G03C 7/32 Colour coupling substances (G03C7/305, G03C7/388 take precedence; ) +9 CPC IPC+CPC Available in IPC and CPC
- G03C 7/388 Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor since 1990 +2 CPC IPC+CPC Available in IPC and CPC
- G03C 7/392 Additives (G03C7/305 - G03C7/32 take precedence) since 1990 +3 CPC IPC+CPC Available in IPC and CPC