Granted Patent
Utility
US 5,324,871 · App. 07/920,439
Hydrogenation process
Inventors:
Franz-Josef Carduck, Gerd Goebel, Theo Fleckenstein, Udo Kreutzer, Guenther Demmering
Patented Case
View Patent ↗
Granted: Jun 28, 1994
Filed: Oct 21, 1992
Inventors
Franz-Josef Carduck
Gerd Goebel
Theo Fleckenstein
Udo Kreutzer
Guenther Demmering
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.