Granted Patent
Utility
US 6,376,021 · App. 08/599,840
Heat treatment of polyphenylene oxide-coated metal
Inventor:
Peter J. Spellane
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Feb 12, 1996
Inventor
Peter J. Spellane
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.