Granted Patent
Utility
US 4,861,813 · App. 07/176,556
5-Aralkyl substituted 2h-benzotriazoles in stabilized compositions
Inventors:
Raymond Seltzer, Roland A. E. Winter
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Apr 1, 1988
Inventors
Raymond Seltzer
Roland A. E. Winter
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.