Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645772 | Refractory ceramic mass for lining the bottoms of electric arc furnaces and process for their repair | Wilfried Eckstein | 1997-07-08 |
| 5067693 | Electric arc oven for treating molten metals with a gas and a process therefor | Etienne Lepoutre, Michel Devaux, Bruno Hirschberg, Paul Weitzer | 1991-11-26 |