Granted Patent
Utility
US 5,312,952 · App. 07/872,563
Polymerization inhibitor for vinyl aromatics
Inventors:
Anthony V. Grossi, Paul E. Stott, John M. DeMassa, Howard Stephen Friedman, Gerald J. Abruscato
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Apr 23, 1992
Inventors
Anthony V. Grossi
Paul E. Stott
John M. DeMassa
Howard Stephen Friedman
Gerald J. Abruscato
Assignee (at issue)
Uniroyal Chemical Company, 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.