Granted Patent
Utility
US 5,233,026 · App. 07/740,656
Azo dyes containing chloro-s-triazine and vinylsulfonyl type fiber-reactive groups
Inventor:
Athanassios Tzikas
Patented Case
View Patent ↗
Granted: Aug 3, 1993
Filed: Aug 2, 1991
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.