Issued Patents All Time
Showing 1–4 of 4 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 |
| 5505918 | Method for manufacturing alkali chromates from chromium ore | Uwe Arndt, Michael Batz, Rainer Bellinghausen, Hans-Dieter Block, Heinrich Helker +5 more | 1996-04-09 |
| 4246432 | Method and apparatus for melting frits for inorganic oxidic surface coatings by electric resistance heating | Werner Joseph | 1981-01-20 |