Granted Patent
Utility
US 4,877,800 · App. 07/217,450
Antipsychotic compositions containing dioxopiperidine derivatives
Inventor:
Brenda Costall
Patented Case
View Patent ↗
Granted: Oct 31, 1989
Filed: Jul 11, 1988
Inventor
Brenda Costall
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.