Granted Patent
Utility
US 4,803,209 · App. 07/090,342
Substituted 2,3-diphenyl-1,2-dihydroquinoxalines
Inventors:
Kurt G. R. Sundelin, Joseph Patrick Salanitro, Susan Stackhouse
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Aug 27, 1987
Inventors
Kurt G. R. Sundelin
Joseph Patrick Salanitro
Susan Stackhouse
Assignee (at issue)
International Minerals & Chemical 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.