IP Library Granted Patent US 4,152,114
Granted Patent Utility
US 4,152,114 · App. 05/899,162

Method of dyeing with dispersible azo anilino dyestuffs

Inventors: Stefan Koller, Dieter Reinker, Hans Rudolf Schwander
Patented Case View Patent ↗
Granted: May 1, 1979 Filed: Apr 24, 1978
Inventors
Stefan Koller
Dieter Reinker
Hans Rudolf Schwander
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.

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Quick Facts
Patent No.
US 4,152,114
App. No.
05/899,162
Filed
1978-04-24
Granted
1979-05-01
Kind
A