Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090928 | Process for the preparation and work-up of N-hydroxyalkylchitosans soluble in aqueous medium | Reinhard Donges, Birgit Kessler | 2000-07-18 |
| 5928709 | Process for the preparation of low molecular weight cellulose ethers | Reinhard Doenges | 1999-07-27 |
| 5719274 | Process for the preparation of low molecular weight cellulose ethers | Reinhard Doenges | 1998-02-17 |
| 5493013 | Process for preparing cellulose ethers with cyclic ethers as suspending agents | — | 1996-02-20 |