Granted Patent
Utility
US 4,892,915 · App. 07/218,188
Copolymers of 2-(2-hydroxy-5-acryloyloxyalkyl)phenyl-2H-benzotriazoles
Inventors:
Mario Slongo, Jean Rody
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Jul 13, 1988
Inventors
Mario Slongo
Jean Rody
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.