Granted Patent
Utility
US 5,710,258 · App. 08/595,435
Azo dyes
Inventors:
Jean-Marie Adam, Peter Werner Sutter
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Feb 5, 1996
Inventors
Jean-Marie Adam
Peter Werner Sutter
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.