Granted Patent
Utility
US 4,469,521 · App. 06/426,724
Corrosion inhibitive pigments
Inventor:
George A. Salensky
Patented Case
View Patent ↗
Granted: Sep 4, 1984
Filed: Sep 29, 1982
Inventor
George A. Salensky
Assignee (at issue)
Union Carbide Corporation
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.