Granted Patent
Utility
US 4,741,739 · App. 07/046,971
Process for printing or dyeing cellulose-containing textile material with reactive dyes in aqueous foam preparation containing a quaternary ammonium condensate
Inventors:
Hans-Ulrich Berendt, Martin Kuhn
Patented Case
View Patent ↗
Granted: May 3, 1988
Filed: May 6, 1987
Inventors
Hans-Ulrich Berendt
Martin Kuhn
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.