Granted Patent
Utility
US 6,033,445 · App. 09/208,131
Dye mixtures and their use
Inventors:
Roger Lacroix, Jean-Marie Adam
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Dec 9, 1998
Inventors
Roger Lacroix
Jean-Marie Adam
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.