Granted Patent
Utility
US 4,439,207 · App. 06/405,500
Stable disperse dye compositions comprising at least two monoazo dyes
Inventors:
Ruedi Altermatt, Hans-Dieter Jakob
Patented Case
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Granted: Mar 27, 1984
Filed: Aug 5, 1982
Inventors
Ruedi Altermatt
Hans-Dieter Jakob
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.