Granted Patent
Utility
US 4,611,016 · App. 06/335,066
Benzofuranone or indolinone compounds useful as stabilizers for organic materials
Inventors:
Hans Hinsken, Horst Mayerhoefer, Wolfgang Mueller, Hermann Schneider
Patented Case
View Patent ↗
Granted: Sep 9, 1986
Filed: Dec 28, 1981
Inventors
Hans Hinsken
Horst Mayerhoefer
Wolfgang Mueller
Hermann Schneider
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.