Granted Patent
Utility
US 4,704,133 · App. 06/796,666
Process for the photochemical stabilization of synthetic polyamide fibre materials with water-soluble copper complex dye
Inventors:
Gerhard Reinert, Hans U. Schutz, Gerhard Back
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Nov 12, 1985
Inventors
Gerhard Reinert
Hans U. Schutz
Gerhard Back
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.