Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342683 | Azo dyes with carboxyl polyalkyleneoxy chain moiety | Winfried Kruckenberg, Karl H. Schundehutte | 1982-08-03 |
| 4329283 | Hydroxypyridone azo dyestuffs | Klaus Leverenz | 1982-05-11 |