Granted Patent
Utility
US 4,655,783 · App. 06/797,098
Process for photochemical stabilization of non-dyed and dyed polyamide fibre material and mixtures thereof
Inventors:
Gerhard Reinert, Helmut Huber-Emden, Gerhard Back
Patented Case
View Patent ↗
Granted: Apr 7, 1987
Filed: Nov 12, 1985
Inventors
Gerhard Reinert
Helmut Huber-Emden
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.