Granted Patent
Utility
US 4,537,618 · App. 06/496,326
N-phenylsulfonyl-N'-pyrimidinylureas
Inventors:
Rolf Schurter, Werner Fory, Willy Meyer
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: May 19, 1983
Inventors
Rolf Schurter
Werner Fory
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.