Granted Patent
Utility
US 5,830,962 · App. 08/838,542
Fluorinated ion-exchange polymers and intermediates therefor
Inventors:
Andrew Edward Feiring, Shlomo Rozen
Patented Case
View Patent ↗
Granted: Nov 3, 1998
Filed: Apr 9, 1997
Inventors
Andrew Edward Feiring
Shlomo Rozen
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.