Granted Patent
Utility
US 5,543,217 · App. 08/384,042
Amorphous copolymers of tetrafluoroethylene and hexafluoropropylene
Inventor:
Richard A. Morgan
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Feb 6, 1995
Inventor
Richard A. Morgan
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.