Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8802897 | Method for preparing cyclic ketones | Doris Neumann, Joachim Ritzer | 2014-08-12 |
| 6983612 | Process for producing phenothiazine granules | Jürgen Beyer, Dietmar Breier, Michael Roos, Jens Ruppert, Olaf Just +1 more | 2006-01-10 |
| 4921505 | Process for the preparation of new crystal modification of an azo dyestuff | Hubert Kruse | 1990-05-01 |