Granted Patent
Utility
US 4,382,133 · App. 06/260,438
Peroxygen compound-6-O-alkanoylisoascorbic acid redox catalyst system for suspension polymerization of vinyl chloride
Inventor:
Norman G. Gaylord
Patented Case
View Patent ↗
Granted: May 3, 1983
Filed: May 4, 1981
Inventor
Norman G. Gaylord
Assignee (at issue)
Dart Industries 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.