Granted Patent
Utility
US 5,612,463 · App. 08/456,215
Fibre-reactive dyes and dye mixtures and their use
Inventor:
Athanassios Tzikas
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: May 31, 1995
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.