Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826826 | Methylated chitosans and their use for the preparation of pharmaceutical compositions | — | 1989-05-02 |
| 4810695 | Chitosan derivatives in the form of coordinated complexes with ferrous ions | Vito Marinoni | 1989-03-07 |