Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779468 | Device for supplying gas to rotary kilns | — | 1998-07-14 |
| 5667759 | Method for manufacturing alkali chromates from chromium ore | Rainer Bellinghausen, Paul Strehlow, Hans-Heinrich Moretto, Bernhard Spreckelmeyer, Norbert Lonhoff +5 more | 1997-09-16 |
| 5505918 | Method for manufacturing alkali chromates from chromium ore | Uwe Arndt, Michael Batz, Rainer Bellinghausen, Hans-Dieter Block, Norbert Lonhoff +5 more | 1996-04-09 |
| 5431560 | Device for supplying gas to a cylindrical rotary kiln | Matthias Weis | 1995-07-11 |