Granted Patent
Utility
US 5,019,398 · App. 07/483,721
Pharmaceutical composition providing the sustained-release of valproic acid
Inventor:
Georges Daste
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Feb 23, 1990
Inventor
Georges Daste
Assignee (at issue)
Sanofi
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.