Granted Patent
Utility
US 5,693,747 · App. 08/675,658
Perfluoroalkyl sulfide sulfone polysulfone and polysulfide diols
Inventors:
Ted Deisenroth, Marlon Haniff
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Jul 3, 1996
Inventors
Ted Deisenroth
Marlon Haniff
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.