Granted Patent
Utility
US 5,047,489 · App. 07/605,636
Ethylenically unsaturated compounds containing 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperidine moieties, and polymers, copolymers and stabilized compositions
Inventors:
Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Oct 30, 1990
Inventors
Ramanathan Ravichandran
Peter J. Schirmann
Andrew Mar
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.