Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4895711 | Preparation of hydroxylammonium salts | Werner Steigleiter, Franz-Josef Weiss | 1990-01-23 |
| 4859642 | Fixed-bed catalyst structure obtained using honeycomb elements | Wolfgang Hoelderich, Michael Kroener, Peter Kroetzsch | 1989-08-22 |
| 4711930 | Honeycomb catalyst and its preparation | Wolfgang Hoelderich, Matthias Irgang, Wolf D. Mross, Michael Kroener, Eberhard Ambach | 1987-12-08 |
| 4659683 | Regeneration of inactive and poisoned platinum catalysts | Otto Hofstadt, Klaus Kartte, Erwin Thomas, Franz-Josef Weiss | 1987-04-21 |