Granted Patent
Utility
US 5,004,791 · App. 07/580,438
Organosiloxane-containing polysaccharides
Inventor:
Robert L. Billmers
Patented Case
View Patent ↗
Granted: Apr 2, 1991
Filed: Sep 10, 1990
Inventor
Robert L. Billmers
Assignee (at issue)
National Starch and Chemical Investment Holding Copporation
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.