Granted Patent
Utility
US 5,586,992 · App. 08/525,655
Dyeing cellulose-containing textile material with hydrogenated indigo
Inventors:
Georg Schnitzer, Franz Suetsch, Michael Schmitt, Erich Kromm, Harald Schlueter, Rudolf Krueger, Andreas Weiper-Idelmann
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Sep 29, 1995
Inventors
Georg Schnitzer
Franz Suetsch
Michael Schmitt
Erich Kromm
Harald Schlueter
Rudolf Krueger
Andreas Weiper-Idelmann
Assignee (at issue)
BASF SE
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.