Granted Patent
Utility
US 5,198,546 · App. 07/608,408
Piperidine-triazine compounds for use as stabilizers for organic materials
Inventors:
Valerio Borzatta, Giuseppe Cantatore
Patented Case
View Patent ↗
Granted: Mar 30, 1993
Filed: Nov 2, 1990
Inventors
Valerio Borzatta
Giuseppe Cantatore
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.