Granted Patent
Utility
US 6,558,525 · App. 10/086,255
Anode for use in aluminum producing electrolytic cell
Inventors:
Donald R Bradford, Robert J. Barnett, Michael B. Mezner
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Mar 1, 2002
Inventors
Donald R Bradford
Robert J. Barnett
Michael B. Mezner
Assignee (at issue)
Northwest Aluminum Technologies
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.