Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5347032 | Preparation of alkyl cyanoacetates | Helmut Reichelt | 1994-09-13 |
| 5342928 | Benzisothiazole- and benzothiophene-azo dyes with a coupling component of the aniline series | Thomas Roetsch, Helmut Hagen, Helmut Reichelt | 1994-08-30 |
| 5330543 | Thiopheneazo dyes with a coupling component of the diaminopyridine series | Guenter Hansen, Gunther Lamm, Hermann Loeffler, Helmut Reichelt, Helmut Degen +1 more | 1994-07-19 |
| 5306815 | Azo dyes with a coupling component of the quinoline series | Erwin Hahn, Andreas Geisberger, Helmut Reichelt, Andreas Guldner, Mathias Wiesenfeldt +3 more | 1994-04-26 |