Granted Patent
Utility
US 6,004,628 · App. 08/863,315
Metal corrosion protection with wash coat of polyphenylene oxide
Inventors:
Peter J. Spellane, Alexander Leo Yahkind, Omar Abu-Shanab
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: May 27, 1997
Inventors
Peter J. Spellane
Alexander Leo Yahkind
Omar Abu-Shanab
Assignee (at issue)
Polymer Alloys 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.