Granted Patent
Utility
US 5,631,352 · App. 08/460,174
Azodyes containing a bridge member based on diamino-substituted triazines
Inventor:
Urs Lauk
Patented Case
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Granted: May 20, 1997
Filed: Jun 2, 1995
Inventor
Urs Lauk
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.