Granted Patent
Utility
US 5,449,776 · App. 08/249,004
Piperidine-triazine compounds for use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials
Inventors:
Graziano Vignali, Fabrizio Guizzardi, Graziano Zagnoni
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: May 25, 1994
Inventors
Graziano Vignali
Fabrizio Guizzardi
Graziano Zagnoni
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.