Granted Patent
Utility
US 5,015,682 · App. 07/481,033
Oligomeric N-hydrocarbyloxy hindered amine light stabilizers
Inventor:
James P. Galbo
Patented Case
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Granted: May 14, 1991
Filed: Feb 14, 1990
Inventor
James P. Galbo
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.