Granted Patent
Utility
US 4,759,792 · App. 07/053,915
Phenylsulfonylureas
Inventor:
Willy Meyer
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: May 26, 1987
Inventor
Willy Meyer
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.