Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4252533 | Sulphur dyestuffs which are ready for dyeing, and processes for dyeing and printing with sulphur dyestuffs | Christian Heid, Konrad Mix, Heinz Dickmanns | 1981-02-24 |