Granted Patent
Utility
US 6,602,318 · App. 09/766,924
Process and apparatus for cleaning and purifying molten aluminum
Inventors:
Jean-Francois Bilodeau, Ghyslain Dube, Claude Dupuis, Sebastien Fafard
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Jan 22, 2001
Inventors
Jean-Francois Bilodeau
Ghyslain Dube
Claude Dupuis
Sebastien Fafard
Assignee (at issue)
Alcan International Limited
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.