Granted Patent
Utility
US 4,338,244 · App. 06/118,011
Benzofuran(2)one or indolin(2)one compounds useful as stabilizers for organic materials
Inventors:
Hans Hinsken, Horst Mayerhoefer, Wolfgang Mueller, Hermann Schneider
Patented Case
View Patent ↗
Granted: Jul 6, 1982
Filed: Feb 4, 1980
Inventors
Hans Hinsken
Horst Mayerhoefer
Wolfgang Mueller
Hermann Schneider
Assignee (at issue)
Sandoz AG
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.