Issued Patents 2003
Showing 1–3 of 3 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, Christof Schoen, 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, Stefan Renfftlen, Christof Schoen, Dirk Voigtlaender +1 more | 2003-10-28 |
| 6574955 | Method and apparatus for desulfurizing a nitrogen oxide adsorber | Doris Schröder, Dirk Voigtlander, Michel Weibel, Gunter Wenninger, Walter Boegner +6 more | 2003-06-10 |