Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4727147 | Optically active 1-(4-methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinolinium acetates | Willi Wintermeyer, Hans Muller, Josef Conti | 1988-02-23 |
| 4375393 | Preparation of diacetone-ketogulonic acid | Willi Wintermeyer, Rolf Wittmann, Jurgen Butzke, Peter Muller | 1983-03-01 |
| 4355158 | Process for the preparation of riboflavin | Rudolf Wolf, Rolf Wittmann, Jurgen Butzke | 1982-10-19 |