Granted Patent
Utility
US 4,518,776 · App. 06/511,830
Process for producing sulfonylureas
Inventors:
Willy Meyer, Werner Fory, Werner Topfl
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jul 8, 1983
Inventors
Willy Meyer
Werner Fory
Werner Topfl
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.