Granted Patent
Utility
US 5,157,007 · App. 07/667,211
Catalyst for purification of exhaust gases of diesel engines and method of use
Inventors:
Rainer Domesle, Bernd Engler, Edgar Koberstein, Herbert Voelker
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: Mar 11, 1991
Inventors
Rainer Domesle
Bernd Engler
Edgar Koberstein
Herbert Voelker
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.