Granted Patent
Utility
US 4,935,501 · App. 07/168,629
Reactive dyes containing fluoro-chloro-pyrimidyl groups and vinylsulfonyl groups or the like
Inventor:
Athanassios Tzikas
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Mar 7, 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.