Granted Patent
Utility
US 4,364,769 · App. 06/166,679
1,3,4-Thiadiazolyloxyphenylureas
Inventors:
Georg Pissiotas, Otto Rohr, Haukur Kristinsson
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Jul 7, 1980
Inventors
Georg Pissiotas
Otto Rohr
Haukur Kristinsson
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.