Granted Patent
Utility
US 4,284,735 · App. 06/162,000
Polyphenylene oxide blend with rubber-maleimide-styrene copolymer
Inventor:
Ronald A. Fava
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Jun 23, 1980
Inventor
Ronald A. Fava
Assignee (at issue)
Arco Polymers, 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.