Granted Patent
Utility
US 5,733,341 · App. 08/572,417
Inhibition of dye migration in a wash liquor
Inventors:
Claude Eckhardt, Dieter Reinehr, Georges Metzger
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Dec 14, 1995
Inventors
Claude Eckhardt
Dieter Reinehr
Georges Metzger
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.