Granted Patent
Utility
US 4,472,253 · App. 06/293,461
Process for the preparation of an N-substituted 3-O-alkyl-14-hydroxynormorphinone derivative
Inventor:
Martin A. Schwartz
Patented Case
View Patent ↗
Granted: Sep 18, 1984
Filed: Aug 17, 1981
Inventor
Martin A. Schwartz
Assignee (at issue)
The Florida Board of Regents on behalf of The Florida State University
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.