Reactive dyes containing a vinylsulfonylaminocarbonyl group bound to bis-(triazenylamino)-benzene as bridging member of two chromophoric systems

Granted: May 15, 1990 Filed: Jun 27, 1988

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.