Granted Patent
Utility
US 4,965,389 · App. 07/162,536
Phenoxyphenylthioureas phenoxyphenylisothioureas and phenoxyphenylcarbodiimides and use thereof for controlling pests
Inventor:
Josef Ehrenfreund
Patented Case
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Granted: Oct 23, 1990
Filed: Mar 1, 1988
Inventor
Josef Ehrenfreund
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.