Granted Patent
Utility
US 4,301,082 · App. 06/122,927
Anthraquinone compounds
Inventor:
Jean-Marie Adam
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Feb 20, 1980
Inventor
Jean-Marie Adam
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.