Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845204 | Cosmetic compositions on the basis of alkyl-hydroxypropyl-substituted chitosan derivatives, new chitosan derivatives and processes for the production thereof | Gunther Lang, Gerhard Maresch, Hans-Rudi Lenz, Eugen Konrad, Dietrich Hoch | 1989-07-04 |
| 4712593 | Apparatus for the metered removal of pasty or fluid substances | Karlheinz Zulauf | 1987-12-15 |