Granted Patent
Utility
US 5,731,421 · App. 08/497,123
Monoazo dyes having a fiber-reactive 2-vinylsulfonyl-5-sufoaniline diazo component and a fiber-reactive halotriazinyl-substituted coupling component of the benzene or naphthalene series
Inventors:
Athanassios Tzikas, Claudia Carisch
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Jun 30, 1995
Inventors
Athanassios Tzikas
Claudia Carisch
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.