Granted Patent
Utility
US 4,154,715 · App. 05/667,797
Polymeric polyblend compositions toughened by addition of liquid polymers of a conjugated diene monomer
Inventor:
Robert L. Kruse
Patented Case
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Granted: May 15, 1979
Filed: Mar 17, 1976
Inventor
Robert L. Kruse
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.