Granted Patent
Utility
US 4,748,259 · App. 06/912,895
Process for the preparation of mixtures of metal salts of ring-substituted salicylic acid compounds
Inventor:
Hermann Nachbur
Patented Case
View Patent ↗
Granted: May 31, 1988
Filed: Sep 26, 1986
Inventor
Hermann Nachbur
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.