Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5605645 | Furnace heater surrounded by a ceramic tube and fastened with a ceramic flange | Anke Brandstadter-Springer, Ludwig Weiler, Fritz Hegewaldt | 1997-02-25 |
| 5574746 | Melting furnace for thermal treatment of special wastes containing heavy metals and/or dioxin | Markus Pfister, Christian Wieckert | 1996-11-12 |
| 5489085 | Waste-gas piping for a filter dust melting furnace | Jurgen Balg, Markus Pfister | 1996-02-06 |