Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4740989 | Plant for producing steel from scrap | Harald Berger | 1988-04-26 |
| 4504307 | Method for carrying out melting, melt-metallurgical and/or reduction-metallurgical processes in a plasma melting furnace as well as an arrangement for carrying out the method | Walter Lugscheider, Ernst Riegler, Ernst Zajicek | 1985-03-12 |