Granted Patent
Utility
US 6,161,377 · App. 09/178,685
Internal-combustion engine system having a nitrogen oxide storage catalyst and an operating process therefor
Inventors:
Walter Boegner, Guenter Karl, Bernd Krutzsch, Christof Schoen, Dirk Voigtlaender, Guenter Wenninger
Patented Case
View Patent ↗
Granted: Dec 19, 2000
Filed: Oct 26, 1998
Inventors
Walter Boegner
Guenter Karl
Bernd Krutzsch
Christof Schoen
Dirk Voigtlaender
Guenter Wenninger
Assignee (at issue)
Daimlerchrysler 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.