Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662552 | Exhaust-gas cleaning system and method with internal ammonia generation, for the reduction of nitrogen oxides | Josef Gunther, Bernd Krutzsch, Dirk Voigtlaender, Miechel Weibel, Marko Weirich | 2003-12-16 |
| 6637189 | Method for the periodically desulfating a nitrogen oxide or sulfur oxide accumulator of an exhaust gas cleaning system | Walter Boegner, Guenter Karl, Bernd Krutzsch, Stefan Renfftlen, Dirk Voigtlaender +1 more | 2003-10-28 |