Granted Patent
Utility
US 6,388,139 · App. 09/177,152
Production of perfluoro (alkyl vinyl) ethers
Inventor:
Paul R. Resnick
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Oct 22, 1998
Inventor
Paul R. Resnick
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.