Granted Patent
Utility
US 4,772,601 · App. 07/148,268
5-Substituted 1-(4-(1-pyrrolidinyl)-2-butynyl)-2-pyrrolidinones, pharmaceutical compositions and use
Inventor:
Lawrence L. Martin
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Jan 25, 1988
Inventor
Lawrence L. Martin
Assignee (at issue)
Hoechst Roussel Pharmaceuticals
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.