Granted Patent
Utility
US 5,921,076 · App. 08/781,040
Process and apparatus for reducing nitrogen oxides in engine emissions
Inventors:
Bernd Krutzsch, Christian Goerigk, Stefan Kurze, Gunter Wenninger, Walter Boegner, Friedrich Wirbeleit
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: Jan 9, 1997
Inventors
Bernd Krutzsch
Christian Goerigk
Stefan Kurze
Gunter Wenninger
Walter Boegner
Friedrich Wirbeleit
Assignee (at issue)
Daimler-Benz AG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.