Granted Patent
Utility
US 5,708,151 · App. 08/552,153
Cationic imidazole azo dyes
Inventor:
Peter Mockli
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Nov 2, 1995
Inventor
Peter Mockli
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.