Granted Patent
Utility
US 4,861,370 · App. 07/275,826
Process for treating molten aluminum alloy with powdered flux
Inventor:
Michael C. Reeve-Parker
Patented Case
View Patent ↗
Granted: Aug 29, 1989
Filed: Nov 25, 1988
Inventor
Michael C. Reeve-Parker
Assignee (at issue)
Ashland Oil, Inc.
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.