Granted Patent
Utility
US 4,332,816 · App. 06/212,471
Fungicidal 3-(N-carbonylamino)-pyrrolidine-2,5-diones
Inventor:
Robert Nyfeler
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: Dec 3, 1980
Inventor
Robert Nyfeler
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.