Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7144832 | Use of a magnesia zirconia brick | Thomas Weichert, Martin Geith, Christian Majcenovic | 2006-12-05 |
| 5218615 | Furnace lining and lining brick therefor with improved heat absorbing characteristics | Klaus Wieland, Dieter Schlacht | 1993-06-08 |