Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7144832 | Use of a magnesia zirconia brick | Bernhard Schmalenbach, Martin Geith, Christian Majcenovic | 2006-12-05 |
| 6352951 | Refractory material based on chromium corundum, a chromium corundum brick and the use of said brick | Karl-Heinz Mossal, Selim Yesiltas, Albert Kleinevoss | 2002-03-05 |
| 5420087 | Refractory or fireproof brick as tin bath bottom brick | Klaus Wieland, Axel Eschner, Christoph Wohrmeyer | 1995-05-30 |