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PCE
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DIFF Subgroup
G03C 8/52

Bases or auxiliary layers; Substances therefor

Introduced: January 1990

Full Title

Diffusion transfer processes or agents therefor; Photosensitive materials for such processes > Structural details > Bases or auxiliary layers; Substances therefor

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

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

IPC defines codes here since 1990.

Child Classifications

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  • G03C 2008/525 2nd only CPC only CPC only
  • G03C 8/54 Timing layers since 1990 IPC+CPC Available in IPC and CPC
  • G03C 8/56 Mordant layers since 1990 IPC+CPC Available in IPC and CPC