Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4729974 | Magnesia and spinel refractory brick | Morteza Nazirizadeh | 1988-03-08 |
| 4711432 | Gas washing device | Michael James Heinz, Joachim Lange, Udo Muschner, Hans Rothfuss, Manfred Winkelmann +1 more | 1987-12-08 |