Granted Patent
Utility
US 4,426,328 · App. 06/191,551
Reactive dyes, their preparation and use
Inventors:
Jean-Marie Adam, Arthur Buhler
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Sep 29, 1980
Inventors
Jean-Marie Adam
Arthur Buhler
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.