Granted Patent
Utility
US 6,177,533 · App. 09/408,827
Polytetrafluoroethylene resin
Inventor:
Jones Clay Woodward
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Sep 29, 1999
Inventor
Jones Clay Woodward
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.