Granted Patent
Utility
US 5,286,865 · App. 07/903,699
Non-migrating 1-hydrocarbyloxy hindered amine derivatives as polymer stabilizers
Inventors:
James P. Galbo, Ramanathan Ravichandran, Peter J. Schirmann, Andrew Mar
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Jun 24, 1992
Inventors
James P. Galbo
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.