Granted Patent
Utility
US 5,597,934 · App. 08/474,206
Process for production of polyol compounds
Inventors:
Johann Klein, Peter Daute, Udo Hees, Bernd Beuer
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Jun 7, 1995
Inventors
Johann Klein
Peter Daute
Udo Hees
Bernd Beuer
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.