C09K 19/3402 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

C09K 19/3402

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 6 combined children, 0 exist in both systems.

6 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

This code exists only in CPC.

Diff view requires codes present in both systems.

View in CPC →