Granted Patent
Utility
US 6,569,947 · App. 10/056,654
Ionomer/high density polyethylene blends with improved impact
Inventor:
Stewart Carl Feinberg
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Jan 25, 2002
Inventor
Stewart Carl Feinberg
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.