Granted Patent
Utility
US 5,958,086 · App. 08/918,884
Dye mixtures, process for their preparation and the use thereof
Inventors:
Jean-Marie Adam, Rudolf Hurter
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Aug 26, 1997
Inventors
Jean-Marie Adam
Rudolf Hurter
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.