Granted Patent
Utility
US 4,242,274 · App. 06/049,412
Process for the preparation of 2,2-diphenyl-4-(dimethylamino)-pentane nitrile
Inventor:
John J. Taylor
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Jun 18, 1979
Inventor
John J. Taylor
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.