Granted Patent
Utility
US 4,400,205 · App. 06/340,166
m-Cyanoalkoxy-phenylureas having herbicidal activity
Inventors:
Georg Pissiotas, Otto Rohr
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Jan 18, 1982
Inventors
Georg Pissiotas
Otto Rohr
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.