Granted Patent
Utility
US 5,019,613 · App. 07/479,907
N-hydrocarbyloxy derivatives of hindered amine-substituted S-triazines
Inventors:
Ramanathan Ravichandran, James P. Galbo
Patented Case
View Patent ↗
Granted: May 28, 1991
Filed: Feb 14, 1990
Inventors
Ramanathan Ravichandran
James P. Galbo
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.