Granted Patent
Utility
US 5,797,984 · App. 08/838,100
Water resistant starch based foams
Inventors:
Robert L. Billmers, Paul A. Altieri
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Apr 15, 1997
Inventors
Robert L. Billmers
Paul A. Altieri
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.