Granted Patent
Utility
US 5,589,529 · App. 08/554,215
Dimeric benzotriazoles as UV absorbers
Inventors:
Dieter Reinehr, Jean-Pierre Bacher, Andr e Schmitter
Patented Case
View Patent ↗
Granted: Dec 31, 1996
Filed: Nov 6, 1995
Inventors
Dieter Reinehr
Jean-Pierre Bacher
Andr e Schmitter
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.