Granted Patent
Utility
US 4,643,760 · App. 06/676,905
Herbicidal sulfonylureas
Inventors:
Willy Meyer, Werner Fory
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Nov 30, 1984
Inventors
Willy Meyer
Werner Fory
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.