Granted Patent
Utility
US 5,185,448 · App. 07/697,134
Substituted 1-oxy-4-acyloxypiperidine and 1-oxy-4-acylaminopiperidine stabilizers
Inventors:
Paul A. Odorisio, Sai P. Shum
Patented Case
View Patent ↗
Granted: Feb 9, 1993
Filed: May 7, 1991
Inventors
Paul A. Odorisio
Sai P. Shum
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.