Granted Patent
Utility
US 6,077,489 · App. 09/212,474
Oxidation catalyst for internal combustion engines
Inventors:
Harald Klein, Hans Van Den Tillaart, Egbert Lox, Thomas Kreuzer, Stephan Eckhoff
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Dec 16, 1998
Inventors
Harald Klein
Hans Van Den Tillaart
Egbert Lox
Thomas Kreuzer
Stephan Eckhoff
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.