Granted Patent
Utility
US 4,426,460 · App. 06/291,446
Polyurethanes or isocyanurates from alkoxylated hydroxymethylfuran
Inventor:
William J. Pentz
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Aug 10, 1981
Inventor
William J. Pentz
Assignee (at issue)
The Quaker Oats Company
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.