Granted Patent
Utility
US 5,665,885 · App. 08/475,129
Adducts of hindered amine-epoxides as stabilizers
Inventor:
Alfred Steinmann
Patented Case
View Patent ↗
Granted: Sep 9, 1997
Filed: Jun 7, 1995
Inventor
Alfred Steinmann
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.