Granted Patent
Utility
US 5,015,856 · App. 07/500,571
Automated process for permeability determinations of barrier resins
Inventor:
Harvey S. Gold
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Mar 28, 1990
Inventor
Harvey S. Gold
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.