Granted Patent
Utility
US 4,451,588 · App. 06/517,198
High load bearing polyurethane foams made from mixed initiator polyether polyols
Inventors:
George P. Speranza, Michael Cuscurida, Bruce W. Peterson
Patented Case
View Patent ↗
Granted: May 29, 1984
Filed: Jul 26, 1983
Inventors
George P. Speranza
Michael Cuscurida
Bruce W. Peterson
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.