Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5458833 | Method of thermal treatment of mineral raw material | Thomas Hammer, Heinzjosef Poggenpohl, Herbert Richrath, Alfred Roeder | 1995-10-17 |
| 4877761 | Refractory composition for refractory linings of metallurgical vessels | Max Chmiel | 1989-10-31 |
| 4549906 | Basic fire resistant material and shaped bodies therefrom | Bernd Wyskott, Kurt H. Moller, Joachim Fleischer | 1985-10-29 |