Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4319880 | Monoazo dyestuff being stable under dyeing conditions; its manufacture and its use | Konrad Opitz | 1982-03-16 |
| 4311836 | Water-insoluble azlactone dyestuffs, processes for their preparation and their use for dyeing or printing synthetic fiber materials | — | 1982-01-19 |