Granted Patent
Utility
US 5,665,125 · App. 08/579,189
Mixtures of fibre-reactive ring-opened phthalimidylazo dyes
Inventors:
Paul Herzig, Anton Andreoli
Patented Case
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Granted: Sep 9, 1997
Filed: Dec 27, 1995
Inventors
Paul Herzig
Anton Andreoli
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.