Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867787 | Mill arrangement with temporary storage vessel and a process of operating the same | Felix Wallner, Horst Wiesinger, Ernst Eichberger, Wilhelm Schiffer, Walter Rockenschaub | 1989-09-19 |
| 4804408 | A mill arrangement and a process of operating the same using off gases to refine pig iron | Felix Wallner, Horst Wiesinger, Ernst Eichberger, Wilhelm Schiffer, Walter Rockenschaub | 1989-02-14 |
| 4546483 | Plasma melting furnace arrangement | Walter Lugscheider, Alois Leutgob, Ernst Riegler, Ernst Zajicek | 1985-10-08 |