Granted Patent
Utility
US 4,241,065 · App. 06/054,225
Fluoro analogs of hydrocodone and oxycodone useful as analgesics, narcotic antagonists or both
Inventors:
George A. Boswell, Rosetta M. Henderson
Patented Case
View Patent ↗
Granted: Dec 23, 1980
Filed: Jul 2, 1979
Inventors
George A. Boswell
Rosetta M. Henderson
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.