Granted Patent
Utility
US 4,366,262 · App. 06/277,885
Method for catalyzed conversion of perfluorocarbon cationic exchange functionality with SF.sub.4
Inventor:
Michael J. Covitch
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Jun 26, 1981
Inventor
Michael J. Covitch
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.