Granted Patent
Utility
US 5,043,311 · App. 07/510,266
Monolithic or honeycomb-type catalyst
Inventors:
Bernd Engler, Edgar Koberstein, Egbert Lox, Herbert Voelker
Patented Case
View Patent ↗
Granted: Aug 27, 1991
Filed: Apr 19, 1990
Inventors
Bernd Engler
Edgar Koberstein
Egbert Lox
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.