Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667759 | Method for manufacturing alkali chromates from chromium ore | Rainer Bellinghausen, Heinrich Helker, Paul Strehlow, Hans-Heinrich Moretto, Bernhard Spreckelmeyer +5 more | 1997-09-16 |
| 5618960 | Fine particle silicon containing surface-bound halogen, a process for its production and its use | Manfred Schulze, Elke Licht, Alfred B orsting, Bruno Degen, Hans-Heinrich Moretto +1 more | 1997-04-08 |