Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169542 | Filters for light metals | Reinhard Stoetzel | 1992-12-08 |
| 5004545 | Ceramic foam filter apparatus | Hans-Peter Wahl, Rudolf Schlueter, Rolf Loos | 1991-04-02 |
| 4713180 | Ceramic filter and method for using same | Franz Hofmann, Hans G. Trapp, Rolf Rietzscher, Jurgen Otto, Gerd Trinki | 1987-12-15 |