Granted Patent
Utility
US 4,401,458 · App. 06/323,019
Novel substituted benzo-2-thia-1,3-diazin-4(3H)-one-2,2-dioxides
Inventor:
Willy Meyer
Patented Case
View Patent ↗
Granted: Aug 30, 1983
Filed: Nov 19, 1981
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.