Granted Patent
Utility
US 4,394,463 · App. 06/289,560
Rigid polyurethane foams made from amino polyols modified with epoxy resins
Inventors:
Michael Cuscurida, Neal J. Grice, George P. Speranza
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Aug 3, 1981
Inventors
Michael Cuscurida
Neal J. Grice
George P. Speranza
Assignee (at issue)
Texaco Inc.
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.