Granted Patent
Utility
US 4,494,956 · App. 06/559,121
Process for pad dyeing cellulosic textile materials
Inventors:
Paul Schafer, Hans-Ulrich Berendt
Patented Case
View Patent ↗
Granted: Jan 22, 1985
Filed: Dec 7, 1983
Inventors
Paul Schafer
Hans-Ulrich Berendt
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.