Granted Patent
Utility
US 5,219,905 · App. 07/805,429
Piperidine compounds containing silane groups for use as stabilisers for organic materials
Inventors:
Primo Carrozza, Valerio Borzatta
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Dec 11, 1991
Inventors
Primo Carrozza
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.