Granted Patent
Utility
US 4,859,724 · App. 07/198,269
Bicyclic piperidine compounds for use as stabilizers for organic materials
Inventors:
Giuseppe Cantatore, Valerio Borzatta
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: May 25, 1988
Inventors
Giuseppe Cantatore
Valerio Borzatta
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.