Granted Patent
Utility
US 4,425,134 · App. 06/353,543
Process for producing agglomerates of water-soluble dyes
Inventors:
Beat Bruttel, Hansjorg Schneider, Alain Millioud, Michael Rosch
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Mar 1, 1982
Inventors
Beat Bruttel
Hansjorg Schneider
Alain Millioud
Michael Rosch
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.