Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 4500350 | Disintegration of chromites | Johann-Nikolaus Meussdoerffer, Hans Niederprum, Wolfgang Bockelmann | 1985-02-19 |