Granted Patent
Utility
US 6,733,579 · App. 10/268,385
Chrome free final rinse for phosphated metal surfaces
Inventor:
George J. Gorecki
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Oct 10, 2002
Inventor
George J. Gorecki
Assignee (at issue)
Nalco Company LLC
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.