Granted Patent
Utility
US 5,834,928 · App. 08/725,001
Method and apparatus for the detection and measurement of solid particles in molten metal
Inventor:
Don Doutre
Patented Case
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Granted: Nov 10, 1998
Filed: Oct 1, 1996
Inventor
Don Doutre
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.