Granted Patent
Utility
US 5,779,739 · App. 08/627,937
Dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material
Inventors:
Andreas von der Eltz, Werner Russ, Bengt-Thomas Grobel
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Mar 28, 1996
Inventors
Andreas von der Eltz
Werner Russ
Bengt-Thomas Grobel
Assignee (at issue)
Hoechst GmbH
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.