Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4348495 | Phosphorous acid esters and their use for stabilizing polyamides | Hans-Josef Buysch, Bert Brassat, Erich Eimers | 1982-09-07 |
| 4340540 | Preparation of basic triarylmethane dyestuffs | — | 1982-07-20 |
| 4330476 | Preparation of cationic triarylmethane dyestuffs | — | 1982-05-18 |
| 4318859 | Process for the preparation of basic dyestuffs | — | 1982-03-09 |