Granted Patent
Utility
US 4,925,928 · App. 07/210,678
Reactive dyes containing vinylsulfonylalkylamino bound to a bis-(triazinylamino)-benzene group
Inventor:
Athanassios Tzikas
Patented Case
View Patent ↗
Granted: May 15, 1990
Filed: Jun 23, 1988
Inventor
Athanassios Tzikas
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.