Granted Patent
Utility
US 4,713,184 · App. 06/780,449
Dispersed oil soluble corrosion inhibitor and water soluble phosphonate scale inhibitor composition
Inventor:
Najib H. Zaid
Patented Case
View Patent ↗
Granted: Dec 15, 1987
Filed: Sep 26, 1985
Inventor
Najib H. Zaid
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.