Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4414401 | Process for separating and recovering metal catalysts | Willi Wintermeyer, Rolf Wittmann | 1983-11-08 |
| 4387245 | Preparation of diacetoneketogulonic acid by oxidation of diacetonesorbose | Rolf Wittmann, Willi Wintermeyer | 1983-06-07 |
| 4375393 | Preparation of diacetone-ketogulonic acid | Fritz Reiff, Willi Wintermeyer, Rolf Wittmann, Peter Muller | 1983-03-01 |
| 4355158 | Process for the preparation of riboflavin | Rudolf Wolf, Fritz Reiff, Rolf Wittmann | 1982-10-19 |