Granted Patent
Utility
US 4,602,936 · App. 06/645,635
Herbicidal sulfonylureas
Inventors:
Werner Topfl, Georg Pissiotas
Patented Case
View Patent ↗
Granted: Jul 29, 1986
Filed: Aug 30, 1984
Inventors
Werner Topfl
Georg Pissiotas
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.