Granted Patent
Utility
US 5,654,434 · App. 08/555,822
Hydrogen peroxide oxidation of 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine
Inventors:
Stephen D. Pastor, Andrea Smith, Kurt M. Bessonen
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Nov 9, 1995
Inventors
Stephen D. Pastor
Andrea Smith
Kurt M. Bessonen
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.