Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6165288 | Highly corrosion and wear resistant chilled casting | Anja Dwars, Heinz Koeper, Wolfgang Prechtl, Joerg Schroepfer | 2000-12-26 |
| 5795540 | Corrosion and wear-resistant chill casting | Anja Dwars, Wolfgang Prechtl, Jorg Schropfer | 1998-08-18 |