Granted Patent
Utility
US 5,773,548 · App. 08/569,139
Catalyst for preparing organosiloxanes or polyorganosiloxanes
Inventors:
Harald Schickmann, Robert Lehnert, Heinz Wendt, Holger Rautschek, Harald Roesler, Hans-Guenther Srebny
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Jan 11, 1996
Inventors
Harald Schickmann
Robert Lehnert
Heinz Wendt
Holger Rautschek
Harald Roesler
Hans-Guenther Srebny
Assignee (at issue)
Huels Silicone 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.