Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822851 | Process for the preparation of cationized polyvinyl alcohol | Ellen Kohn, Dietmar Bischoff | 1989-04-18 |
| 4812257 | Process for dry cationization of starch | Wolfgang Fischer, Michael Huss, Klaus Udluft | 1989-03-14 |