Granted Patent
Utility
US 4,673,735 · App. 06/598,236
Azo compounds having at least one 6-hydroxypyrid-2-one coupling component radical metal complexes thereof and intermediates therefor
Inventors:
Helmut Moser, Manfred Greve, Reinhard Pedrazzi, Roland Wald
Patented Case
View Patent ↗
Granted: Jun 16, 1987
Filed: Apr 9, 1984
Inventors
Helmut Moser
Manfred Greve
Reinhard Pedrazzi
Roland Wald
Assignee (at issue)
Sandoz AG
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.