Granted Patent
Utility
US 4,563,192 · App. 06/651,034
Process for dyeing fibre material made of synthetic polyamides with anionic dyes and an auxiliary mixture
Inventors:
Heinz Salathe, Hermann Flensberg, Harry Schaetzer
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: Sep 14, 1984
Inventors
Heinz Salathe
Hermann Flensberg
Harry Schaetzer
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.