Granted Patent
Utility
US 5,663,273 · App. 08/456,217
Polyurethanes derived from oligoperfluoroalkyl alcohols
Inventors:
Marlon Haniff, Robert A. Falk, Ted Deisenroth, Karl F. Mueller
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: May 31, 1995
Inventors
Marlon Haniff
Robert A. Falk
Ted Deisenroth
Karl F. Mueller
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.