Granted Patent
Utility
US 4,093,775 · App. 05/680,787
Treating a polymeric shape with nonionic fluorochemical surfactants and product therefrom
Inventor:
Alex J. Szur
Patented Case
View Patent ↗
Granted: Jun 6, 1978
Filed: Apr 27, 1976
Inventor
Alex J. Szur
Assignee (at issue)
Diamond Shamrock 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.