Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364864 | 1:2 Cobalt and chromium complex unsymmetrical azo dyes | Fabio Beffa, Hans U. Schutz | 1982-12-21 |
| 4331596 | Arylazoarylazo-substituted azo, azomethine 1:2 chromium complex dyes | Fabio Beffa | 1982-05-25 |