Granted Patent
Utility
US 6,040,405 · App. 09/178,038
Base resistant fluorinated polymers
Inventor:
Paul Gregory Bekiarian
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Oct 23, 1998
Inventor
Paul Gregory Bekiarian
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.