Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5703238 | Preparation of pyridine dyes | Sabine Gruttner-Merten, Peter Saling, Rudiger Sens, Helmut Reichelt | 1997-12-30 |
| 5654122 | N-aminopyridone dyes | Karl-Heinz Etzbach, Ruediger Sens, Matthias Wiesenfeldt | 1997-08-05 |
| 5637702 | Sulfur compounds | Manfred Patsch | 1997-06-10 |
| 5616710 | Triazolopyridine dyes | Rudiger Sens, Helmut Reichelt, Karl-Heinz Etzbach | 1997-04-01 |
| 5612465 | Phenylazotriazolopyridine dyestuffs | Ruediger Sens, Karl-Heinz Etzbach, Helmut Reichelt, Clemens Grund | 1997-03-18 |
| 5608041 | Azo dyestuffs containing a diazo component from the aniline series and coupling component from the triazolopyridine series | Volker Bach, Helmut Reichelt, Clemens Grund | 1997-03-04 |