Granted Patent
Utility
US 4,917,705 · App. 07/247,208
Process for dyeing or printing of fibre material from natural or synthetic polyamides with reactive disazo dyes
Inventors:
Dieter Mausezahl, Peter Loew
Patented Case
View Patent ↗
Granted: Apr 17, 1990
Filed: Sep 21, 1988
Inventors
Dieter Mausezahl
Peter Loew
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.