Granted Patent
Utility
US 4,746,351 · App. 06/861,817
Herbicidally active substituted phenoxy benzoxazole (or benzothiazole)
Inventor:
Donald R. Nielsen
Patented Case
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Granted: May 24, 1988
Filed: May 12, 1986
Inventor
Donald R. Nielsen
Assignee (at issue)
PPG Industries, Inc.
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.