Granted Patent
Utility
US 4,284,734 · App. 06/186,030
Moldable blend of interpolymer of rubber, methacrylic acid and styrene with polyurethane
Inventor:
Clarence E. Chaney
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Sep 11, 1980
Inventor
Clarence E. Chaney
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.