Granted Patent
Utility
US 4,472,286 · App. 06/547,168
Perfluoroalkyl anion/perfluoroalkyl cation ion pair complexes
Inventor:
Robert A. Falk
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Oct 31, 1983
Inventor
Robert A. Falk
Assignee (at issue)
Ciba-Geigy
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.