Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7544321 | Process container with cooling elements | Reinhard Püllenberg | 2009-06-09 |
| 5923698 | Method of operating an arc furnace, and an arc furnace | Jan Oelscher, Sven-Einar Stenkvist | 1999-07-13 |