Granted Patent
Utility
US 5,240,465 · App. 07/984,810
Process for reactive dyeing a cellulose-containing textile material with anionic dyeing assistant as levelling agent
Inventor:
Francis Palacin
Patented Case
View Patent ↗
Granted: Aug 31, 1993
Filed: Dec 3, 1992
Inventor
Francis Palacin
Assignee (at issue)
Sandoz AG
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.