Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5789557 | Reactive azo dyes with a coupler of the aminonaphthalene series | Jurgen Dornhagen, Manfred Patsch, Hermann Loffler, Ortwin Schaffer | 1998-08-04 |
| 5681937 | Reactive azo dyes with a coupling component from the aminonaphthalenesulfonic acid series | Manfred Patsch, Andrea Zamponi | 1997-10-28 |
| RE35407 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach | 1996-12-17 |
| 5525743 | Preparation of anthraquinone imide compounds | Udo Bergmann, Helmut Hoch, Reinhold Kohlhaupt, Matthias Niedenbrueck | 1996-06-11 |
| 5461131 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach | 1995-10-24 |
| 5436306 | Methine or azamethine dye polymers | Karl-Heinz Etzbach, Ruediger Sens | 1995-07-25 |
| 5434231 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach | 1995-07-18 |
| 5424461 | Preparation of 1-amino-4-hydroxyanthraquinone | Erwin Hahn, Manfred Patsch | 1995-06-13 |
| 5393645 | Production of structured polymer layers having nonlinear optical properties | Karl-Heinz Etzbach, Hans-Joachim Lorkowski, Karl-Friedrich Pfeiffer | 1995-02-28 |
| 5393644 | Production of crosslinked polymer layers having nonlinear optical properties and their use | Karl-Heinz Etzbach, Hans-Joachim Lorkowski, Karl-Friedrich Pfeiffer | 1995-02-28 |
| 5264507 | Azo dye polymers | Matthias Wiesenfeldt, Sabine Gruettner-Merten, Ruediger Sens, Karl-Heinz Etzbach | 1993-11-23 |
| 5231140 | Preparation of polymers with side groups with NLO activity, and the use thereof | Karl-Heinz Etzbach, Karin H. Beck, Peter Strohriegl, Harry Mueller, Oskar Nuyken | 1993-07-27 |