Non-steroidal liquid crystal compounds

Introduced: January 1985

Full Title

Liquid crystal materials > characterised by the chemical structure of the liquid crystal components > Non-steroidal liquid crystal compounds

CPC subdivides this area 3x more granularly than IPC with 7 additional codes.

7 codes are CPC-only extensions.

IPC defines codes here since 1985.

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C09K 19/061 CPC only CPC only
C09K 19/062 CPC only CPC only
C09K 19/063 CPC only CPC only
C09K 19/065 CPC only CPC only
C09K 19/066 CPC only CPC only
C09K 19/067 CPC only CPC only
C09K 19/068 CPC only CPC only
C09K 19/08 containing at least two non-condensed rings since 1985 IPC+CPC Available in IPC and CPC
C09K 19/32 containing condensed ring systems, i.e. fused, bridged or spiro ring systems since 1985 +4 CPC IPC+CPC Available in IPC and CPC
C09K 19/34 containing at least one heterocyclic ring since 1985 +3 CPC IPC+CPC Available in IPC and CPC