Granted Patent
Utility
US 4,567,186 · App. 06/691,802
5-Heteryl-1,6-naphthyridin-2(1H)-ones, cardiotonic use thereof and intermediates therefor
Inventors:
George Y. Lesher, Baldev Singh
Patented Case
View Patent ↗
Granted: Jan 28, 1986
Filed: Jan 14, 1985
Inventors
George Y. Lesher
Baldev Singh
Assignee (at issue)
Sterling Drug, Inc.
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.