Granted Patent
Utility
US 6,677,264 · App. 09/442,633
Catalyst for cleaning up the exhaust gases of a diesel engine
Inventors:
Harald Klein, Wolfgang Strehlau, Egbert Lox, Thomas Kreuzer, Wilfried Muller
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Nov 18, 1999
Inventors
Harald Klein
Wolfgang Strehlau
Egbert Lox
Thomas Kreuzer
Wilfried Muller
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.