Granted Patent
Utility
US 5,611,820 · App. 08/554,422
Process for dyeing wool-containing fibre materials
Inventor:
Philippe Ouziel
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Nov 6, 1995
Inventor
Philippe Ouziel
Assignee (at issue)
Ciba-Geigy
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.