Granted Patent
Utility
US 6,274,763 · App. 09/308,213
Shell catalyst for producing acetic acid by gas phase oxidation of unsaturated C4 -hydrocarbons
Inventors:
Christoph Ruedinger, Hans Eberle, Norbert Zeitler, Max Wollin, Gudrun Wittmann
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: May 14, 1999
Inventors
Christoph Ruedinger
Hans Eberle
Norbert Zeitler
Max Wollin
Gudrun Wittmann
Assignee (at issue)
Consortium für elektrochemische Industrie GmbH
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.