Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6132693 | Process and device for reducing pollutants, especially nitrogen oxides in combustion exhaust gases | Werner Gruenwald, Steffen Franke | 2000-10-17 |
| 5779879 | Apparatus and method for reducing harmful substances in combustion gases | Wolfgang Blankenhorn | 1998-07-14 |