Granted Patent
Utility
US 5,649,980 · App. 08/538,059
Process for the photochemical and thermal stabilization of undyed and dyed polyester fibre materials
Inventors:
Dieter Reinehr, Gerhard Reinert, Manfred Rembold
Patented Case
View Patent ↗
Granted: Jul 22, 1997
Filed: Oct 2, 1995
Inventors
Dieter Reinehr
Gerhard Reinert
Manfred Rembold
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.