Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4782111 | Colorant formulation | Peter Klein, Bernd Dewald | 1988-11-01 |
| 4732573 | Novel dye salts of cationic dyes, having thiocyanatometallate or cyanatometallate complex anions for spin dyeing acid modified polyacrylonitrile | Kurt Hohmann, Peter Mischke | 1988-03-22 |
| 4445904 | Process for continuously dyeing in the gel state fiber material of acrylonitrile polymers spun from organic solvents with carbinol- or anhydro base of basic dye | Manfred Hahnke | 1984-05-01 |
| 4405734 | Process for mass coloring thermoplastic plastics | Otto Fuchs, Adolf Kroh | 1983-09-20 |
| 4294749 | Process for the coloration of thermoplastic polymers and polycondensates in the mass with water-insoluble disazo-methine compounds | Theodor Papenfuhs | 1981-10-13 |
| 4265632 | Process for the coloration of thermoplastic polymers and polycondensates in the mass with water-insoluble disazomethine compounds | Theodor Papenfuhs | 1981-05-05 |
| 4235641 | Dyeing agent compositions based on polypropylene wax | Manfred Engelmann, Karl-Heinz Maier, Arno Spange, Bernd Dewald, Hans-Joachim Lenz | 1980-11-25 |