Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780310 | Cosmetic compositions based upon N-hydroxypropyl-chitosans, new N-hyroxypropyl-chitosans, as well as processes for the production thereof | Gerhard Maresch, Harald Wendel, Eugen Konrad, Hans-Rudi Lenz, Jurgen Titze | 1988-10-25 |