Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090928 | Process for the preparation and work-up of N-hydroxyalkylchitosans soluble in aqueous medium | Reinhard Donges, Diethart Reichel | 2000-07-18 |
| 5866027 | Process for producing fiber-reinforced xerogels and their use | Dierk Frank, Andreas Zimmermann | 1999-02-02 |
| 5811031 | Method for the subcritical drying of aerogels | Rolf Jansen, Johann Wonner, Andreas Zimmermann | 1998-09-22 |
| 5705535 | Method for the subcritical drying of aerogels | Rolf Jansen, Johann Wonner, Andreas Zimmermann | 1998-01-06 |