Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 6408620 | Exhaust-gas cleaning system with nitrogen oxide accumulator catalyst and sulphur oxide trap and operating method therefor | Walter Boegner, Josef Gunther, Hans-Peter Holzt, Bernd Krutzsch, Stefan Renfftlen +3 more | 2002-06-25 |
| 6318075 | Method and device for periodically desulphating a nitrogen oxide or sulphur oxide storage vessel with rich/lean engine cylinder distribution | Josef Gunther, Andreas Hertzberg, Ralph Stetter, Dirk Voigtlander | 2001-11-20 |
| 5771686 | Method and apparatus for operating a diesel engine | Stefan Pischinger, Michel Weibel, Bernd Krutzsch, Rudiger Pfaff, Walter Boegner | 1998-06-30 |