Granted Patent
Utility
US 5,250,078 · App. 07/881,588
Process for dyeing hydrophobic textile material with disperse dyes from supercritical CO.sub.2 : reducing the pressure in stages
Inventors:
Wolfgang Saus, Dierk Knittel, Eckhard Schollmeyer, Hans-Jurgen Buschmann
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: May 12, 1992
Inventors
Wolfgang Saus
Dierk Knittel
Eckhard Schollmeyer
Hans-Jurgen Buschmann
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.