Granted Patent
Utility
US 5,367,008 · App. 08/064,186
3-(alkoxyphenyl)benzofuran-2-ones as stabilisers
Inventor:
Peter Nesvadba
Patented Case
View Patent ↗
Granted: Nov 22, 1994
Filed: May 17, 1993
Inventor
Peter Nesvadba
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.