Granted Patent
Utility
US 6,334,986 · App. 09/757,581
Process for the selective catalytic reduction of the nitrogen oxides contained in a lean exhaust gas
Inventors:
Jurgen Gieshoff, Hans Van Den Tillaart, Thomas Kreuzer, Egbert Lox, Jurgen Lang
Patented Case
View Patent ↗
Granted: Jan 1, 2002
Filed: Jan 11, 2001
Inventors
Jurgen Gieshoff
Hans Van Den Tillaart
Thomas Kreuzer
Egbert Lox
Jurgen Lang
Assignee (at issue)
Degussa 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.