Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7506631 | Internal combustion engine | Frank Altenschmidt, Dietmer Bertsch, Michael Dohn, Uwe Schaupp | 2009-03-24 |
| 6662552 | Exhaust-gas cleaning system and method with internal ammonia generation, for the reduction of nitrogen oxides | Josef Gunther, Bernd Krutzsch, Christof Schoen, 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, Christof Schoen +1 more | 2003-10-28 |
| 6619108 | Method for identifying the state of an NOx storage catalyst | Thomas Birkhofer, Aleksandar Knezevic, Holger Leye, Ralf Moos, Carsten Plog +1 more | 2003-09-16 |
| 6338244 | Exhaust gas purification process and apparatus with internal generation of ammonia for reducing nitrogen oxide | Josef Guenther, Brititte Konrad, Bernd Krutzsch, Arno Nolte, Michel Weibel +2 more | 2002-01-15 |
| 6318073 | Process and system for purifying exhaust gases of an internal-combustion engine | Walter Boegner, Guenter Karl, Bernd Krutzsch, Christof Schoen, Guenter Wenninger | 2001-11-20 |
| 6176079 | Process and apparatus for reducing nitrogen-oxide emissions in exhaust gas | Brigitte Konrad, Bernd Krutzsch | 2001-01-23 |
| 6170259 | Emission control system for an internal-combustion engine | Walter Boegner, Karl-Ernest Haak, Bernd Krutzsch, Guenter Wenninger, Friedrich Wirbeleit | 2001-01-09 |
| 6161377 | Internal-combustion engine system having a nitrogen oxide storage catalyst and an operating process therefor | Walter Boegner, Guenter Karl, Bernd Krutzsch, Christof Schoen, Guenter Wenninger | 2000-12-19 |
| 6119450 | Process and system for purifying exhaust gases of an internal-combustion engine | Walter Boegner, Guenter Karl, Bernd Krutzsch, Christof Schoen, Guenter Wenninger | 2000-09-19 |
| 6082100 | Method for operating a multicylinder internal combustion engine | Walter Boegner, Frank Duvinage, Walter Friess, Karl-Ernst Haak, Bernd Krutzsch +7 more | 2000-07-04 |
| 5910097 | Internal combustion engine exhaust emission control system with adsorbers for nitrogen oxides | Walter Boegner, Karl-Ernst Haak, Bernd Krutzsch, Wim Verrelst, Guenter Wenninger +1 more | 1999-06-08 |