Granted Patent
Utility
US 5,389,108 · App. 07/914,157
Process for fixing dyes
Inventors:
Katharina Fritzsche, Martin Trottmann
Patented Case
View Patent ↗
Granted: Feb 14, 1995
Filed: Jul 14, 1992
Inventors
Katharina Fritzsche
Martin Trottmann
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.