Granted Patent
Utility
US 4,619,974 · App. 06/682,485
Perfluoroalkyl substituted polymers
Inventor:
Karl F. Mueller
Patented Case
View Patent ↗
Granted: Oct 28, 1986
Filed: Dec 17, 1984
Inventor
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.