Granted Patent
Utility
US 6,683,225 · App. 09/835,657
Oxidic aluminum/zinc catalysts and a process of producing unsaturated fatty alcohols
Inventors:
Guenther Demmering, Lothar Friesenhagen, Stephan Heck, Hans-Peter Kubersky
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Apr 16, 2001
Inventors
Guenther Demmering
Lothar Friesenhagen
Stephan Heck
Hans-Peter Kubersky
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.