Granted Patent
Utility
US 4,292,037 · App. 06/116,379
Process for dyeing cellulose-containing fibre materials
Inventors:
Pierre Galafassi, Jean-Marie Adam, Peter Loew, Hans Scheidegger
Patented Case
View Patent ↗
Granted: Sep 29, 1981
Filed: Jan 29, 1980
Inventors
Pierre Galafassi
Jean-Marie Adam
Peter Loew
Hans Scheidegger
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.