Granted Patent
Utility
US 4,875,903 · App. 07/058,434
Monoazo compounds containing a 2-sulfophenyl diazo component radical and a 1-hydroxy-naphthalene-sulfonic or disulfonic acid coupling component radical and two substituted 1,3,5-triazine rings
Inventor:
Reinhard Pedrazzi
Patented Case
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Granted: Oct 24, 1989
Filed: Jun 5, 1987
Inventor
Reinhard Pedrazzi
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.