Granted Patent
Utility
US 5,585,422 · App. 08/530,972
Hybrid s-triazine light stabilizers substituted by benzotriazole or benzophenone moieties and compositions stabilized therewith
Inventors:
Robert A. Falk, Tyler A. Stevenson, Gregory R. Coughlin
Patented Case
View Patent ↗
Granted: Dec 17, 1996
Filed: Sep 20, 1995
Inventors
Robert A. Falk
Tyler A. Stevenson
Gregory R. Coughlin
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.