Granted Patent
Utility
US 6,667,377 · App. 09/852,381
Polyvinylidene fluoride ionomers containing pendant fluoroalkylsulfonyl imide or fluoroalkylsulfonyl methide groups
Inventors:
Andrew Edward Feiring, Christopher Marc Doyle, Mark Gerrit Roelofs, William B. Farnham, Paul Gregory Bekiarian, Hanne Anna Katharina Blau
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: May 10, 2001
Inventors
Andrew Edward Feiring
Christopher Marc Doyle
Mark Gerrit Roelofs
William B. Farnham
Paul Gregory Bekiarian
Hanne Anna Katharina Blau
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.