Granted Patent
Utility
US 4,663,389 · App. 06/794,014
Polyblends of styrene-maleic anhydride-methyl methacrylate terpolymers, acrylonitrile-butadiene-styrene polymers and polycarbonates
Inventors:
William J. Jones, Robert A. Mendelson
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Nov 1, 1985
Inventors
William J. Jones
Robert A. Mendelson
Assignee (at issue)
Monsanto Company
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.