Granted Patent
Utility
US 4,739,093 · App. 06/843,542
Novel phosphorus compounds for protecting cultivated plants from the phytotoxic action of herbicides
Inventors:
Peter J. Diel, Ludwig Maier
Patented Case
View Patent ↗
Granted: Apr 19, 1988
Filed: Mar 25, 1986
Inventors
Peter J. Diel
Ludwig Maier
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.