Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4795571 | Purification of frozen crystal layers | Bernhard Holzknecht, Hugo Fuchs, Eckhard Hetzel, Peter Thoma | 1989-01-03 |
| 4493719 | Method of separation by fractional crystallization from a liquid mixture | Dieter Stockburger, Hugo Fuchs | 1985-01-15 |
| 4369327 | Preparation of phthalic anhydride | Dieter Stockburger, Wilhelm Schultz, Johannes E. Schmidt, Friedrich Wirth, Herwig Hoffmann +1 more | 1983-01-18 |
| 4212725 | Electrodes for electrolysis purposes | Wolfgang Habermann, Peter Thoma | 1980-07-15 |