Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837148 | Nitrate recovery plant | Erich Danzmann, Bernd Muskulus, Bernd Neitzert, Frank Zips | 1998-11-17 |
| 5455463 | Method and apparatus for regulating the power supply voltage in motor vehicles | Wolfgang Langnickel, Paulus Heidemeyer | 1995-10-03 |
| 5011614 | Process for the decomposition of explosive nitric acid esters dissolved in wastewaters | Wilhelm Gresser, Klaus Schelhase, Heinz Frisch, Klaus Kaschel, Berent Reinecke | 1991-04-30 |