Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8715778 | Ballast and process for the production of ballast | Andreas Hoffmann, Bert Klesczewski | 2014-05-06 |
| 8232364 | Gel masses based on polyurethane, their production and use | Andreas Hoffman, Matteo Mason | 2012-07-31 |
| 5362834 | Gel compounds, their production and use | Dietmar Schapel, Hartwig Grammes | 1994-11-08 |