Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5525152 | Pigment salts and their use for dyeing and pigmenting | Peter Roschger, Stephan Michaelis, Bernd Woost, Bernd Kaletta | 1996-06-11 |
| 5298583 | Polymer dyestuffs and preparation and use thereof | Ludger Heiliger, Hans-Ulrich Siegmund, Herbert Hugl, Antonius Lobberding, Eberhard Kuckert +2 more | 1994-03-29 |