Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4487756 | Process for manufacturing crystalline alumina | Tiberiu Mizrah, Bernd Schr/o/ der | 1984-12-11 |
| 4374119 | Process for the production of coarse crystalline alumina | Volker Nobbe, Bernd Schröder, Werner J. Borer, Manfred Kullack | 1983-02-15 |