Granted Patent
Utility
US 4,973,772 · App. 07/146,257
Catalytic method for producing fluoroarmatic compounds using substituted pyridinium salts
Inventor:
Gary L. Cantrell
Patented Case
View Patent ↗
Granted: Nov 27, 1990
Filed: Feb 7, 1987
Inventor
Gary L. Cantrell
Assignee (at issue)
MALLINCKRODT LLC
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.