Granted Patent
Utility
US 5,892,073 · App. 08/995,392
Process for preparation of 13-cis-retinoic acid
Inventor:
Angelo Grato Magnone
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Dec 22, 1997
Inventor
Angelo Grato Magnone
Assignee (at issue)
Laboratori Mag S.p.A.
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.