Direct positive emulsions

Introduced: July 1974

Full Title

Full titles differ between systems:

IPC:

Photosensitive materials > Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein > Direct positive emulsions

CPC:

Photosensitive materials (photosensitive materials for multicolour processes G03C7/00; for diffusion transfer processes G03C8/00; photosensitive glass C03C4/04) > Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein (catalytic amounts of silver halide in dry silver systems G03C1/494) > Direct positive emulsions

Of 4 combined children, 0 exist in both systems.

4 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

Child Classifications

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G03C 1/48515 +1 CPC CPC only CPC only
G03C 1/48538 +3 CPC CPC only CPC only
G03C 1/48592 CPC only CPC only
G03C 2001/48507 2nd only CPC only CPC only