Granted Patent
Utility
US 5,013,482 · App. 07/381,213
Corrosion inhibition
Inventor:
Robert M. O'Neil
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Jul 17, 1989
Inventor
Robert M. O'Neil
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.