Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7407728 | Alkaline cell or battery | Harald Hoffmann, Birgit Severich, Hartwig Hocker, Helmut Keul | 2008-08-05 |
| 4442233 | Method for the manufacture of cross-linked and optionally foamed polypropylene | Ernst Lohmar | 1984-04-10 |