Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5442048 | Process for the preparation of activated chitosans and their use in the preparation of chiotsan derivatives | Reinhard Donges | 1995-08-15 |
| 5302196 | Modified cellulose ethers and the use thereof in dispersion paints | Reinhard Donges, Walter Schermann, Walter Schrattenholz | 1994-04-12 |