C09K 19/3491 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

C09K 19/3491

Full Title

Liquid crystal materials > characterised by the chemical structure of the liquid crystal components > Non-steroidal liquid crystal compounds > containing at least one heterocyclic ring

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

This code exists only in CPC.

Diff view requires codes present in both systems.

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