Granted Patent
Utility
US 5,071,442 · App. 07/638,253
Process for dyeing or printing cellulosic textile fibre material by the trichromatic technique: reactive dyes
Inventors:
Jean P. Luttringer, Athanassios Tzikas, Pierre Galafassi
Patented Case
View Patent ↗
Granted: Dec 10, 1991
Filed: Jan 4, 1991
Inventors
Jean P. Luttringer
Athanassios Tzikas
Pierre Galafassi
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.