Granted Patent
Utility
US 4,532,250 · App. 06/554,498
5-Heteroarylimidazol-2-ones having cardiotonic activity
Inventors:
David M. Stout, Diane M. Yamamoto
Patented Case
View Patent ↗
Granted: Jul 30, 1985
Filed: Nov 23, 1983
Inventors
David M. Stout
Diane M. Yamamoto
Assignee (at issue)
American Hospital Supply Corp.
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.