Granted Patent
Utility
US 4,424,359 · App. 06/287,859
Vinyl-substituted 2,2'-bipyridine compounds
Inventors:
Ju/ rgen Kaschig, Dieter Lohmann
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Jul 27, 1981
Inventors
Ju/ rgen Kaschig
Dieter Lohmann
Assignee (at issue)
Ciba-Geigy
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.