Granted Patent
Utility
US 6,089,015 · App. 09/078,415
Method of purifying a lean exhaust gas and catalytic system therefor
Inventors:
Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Jurgen Hohne
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: May 14, 1998
Inventors
Wolfgang Strehlau
Egbert Lox
Thomas Kreuzer
Jurgen Hohne
Assignee (at issue)
Degussa-Huels 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.