Granted Patent
Utility
US 5,338,319 · App. 07/870,650
Process for the photochemical and thermal stabilization of polyamide fibre material with a copper complex having fibre-affinity and an oxalic acid diarylamide
Inventors:
Jurgen Kaschig, Gerhard Reinert
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Apr 20, 1992
Inventors
Jurgen Kaschig
Gerhard Reinert
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.