Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340088 | Metallurgical vessel and method of making the refractory lining of such vessels | Gerhard Madritsch, Friedrich Kassegger, Heinz Maslo, Paul Weitzer | 1994-08-23 |
| 5067693 | Electric arc oven for treating molten metals with a gas and a process therefor | Etienne Lepoutre, Michel Devaux, Franz-Adolf Petio, Paul Weitzer | 1991-11-26 |
| 4378106 | Refractory gas permeable structural unit | Francois Schleimer | 1983-03-29 |