Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4571246 | Process for the production of discharge resist prints on hydrophobic textile materials: hydrogen sulphide salt, polysulpane or thiolate | Ulrich Buhler, Theo Stahl, Kurt Roth | 1986-02-18 |
| 4461622 | Dyestuffs of the phthalocyanine series, their preparation and their use on cellulose | Erich Feess | 1984-07-24 |
| 4252533 | Sulphur dyestuffs which are ready for dyeing, and processes for dyeing and printing with sulphur dyestuffs | Christian Heid, Heinz Dickmanns, Erwin Krusche | 1981-02-24 |