Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4420308 | Process for the production of reserve effects on polyester textiles and polyester/cellulose mixed fibre textiles: discharge printing with disperse azo dye with alkyl or alkoxy carbonyl, cyand and hydroxy phenyl group | Horst Kindler, Klaus Kuhlein, Maria Kallay, Uwe Kosubek, Rudolf Lowenfeld +1 more | 1983-12-13 |
| 4417897 | Process for preparing burn-out effects on textile materials | Theo Stahl | 1983-11-29 |
| 4415494 | Water-insoluble monoazo dyestuffs, their manufacture and their use | Rudolf Lowenfeld, Uwe Kosubek, Maria Kallay | 1983-11-15 |
| 4406661 | Process for dyeing and printing synthetic, hydrophobic fibre material with dischargeable azo disperse dye | Joachim Ribka, Horst Tappe, Kurt Roth | 1983-09-27 |
| 4398913 | Process for producing discharge reserve prints on textile materials | Joachim Ribka, Kurt Roth, Theo Stahl | 1983-08-16 |
| 4386935 | Process for producing discharge reserve prints on textile materials with amino-azo-benzene dyes | Klaus Kuhlein, Theo Stahl, Horst Tappe, Kurt Roth | 1983-06-07 |
| 4381262 | Water-insoluble azo dyestuffs, their manufacture and their use | Dieter Cornelius, Rudolf Lowenfeld, Uwe Kosubek, Reinhard Hahnle, Rudolf Schickfluss | 1983-04-26 |
| 4325870 | Process for the preparation of 2,6-diaminopyridine-azo dyestuffs and of their precursors | Ernst Heinrich | 1982-04-20 |
| 4225716 | Process for the manufacture of 2,6-dichloropyridine derivatives | Ernst Heinrich | 1980-09-30 |