Granted Patent
Utility
US 4,500,679 · App. 06/406,407
Polyblends of thermoplastic copolyetheresters styrene-maleic anhydride polymers, and acrylonitrile-butadiene-styrene polymers
Inventor:
Daniel Dufour
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Aug 9, 1982
Inventor
Daniel Dufour
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.