C09K 2019/0425 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup Additional Only

C09K 2019/0425

Full Title

Liquid crystal materials > characterised by the chemical structure of the liquid crystal components

Of 4 combined children, 0 exist in both systems.

4 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.