Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913780 | Redox electrode for determining nitrous acid and nitrosyl compounds | Wolfgang Habermann, Peter Hammes, Reinhard Messlinger, Manered Munzinger | 1990-04-03 |
| 4663324 | Pyridazinone derivatives, their preparation and their use as fungicides | Hermann Graf, Costin Rentzea, Winfried Richarz, Eberhard Ammermann, Ernst-Heinrich Pommer | 1987-05-05 |
| 4297493 | Manufacture of 4-amino-5-chloro-1-phenylpyridaz-6-one using aqueous phenol-4-sulfonic acid | Winfried Richarz, Harald Schroeder | 1981-10-27 |