C09B 1/202 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

C09B 1/202

Full Title

Dyes with anthracene nucleus not condensed with any other ring > Amino-anthraquinones > Preparation from starting materials already containing the anthracene nucleus

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.

View in CPC →