Granted Patent
Utility
US 6,653,359 · App. 10/133,266
Fire retardant silicone surfactants for use in inert gas blown polyurethane foams
Inventors:
Brian L. Hilker, Lee F. Lawler, Susan B. McVey
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Apr 26, 2002
Inventors
Brian L. Hilker
Lee F. Lawler
Susan B. McVey
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.