Granted Patent
Utility
US 5,314,526 · App. 07/623,150
Metallothermic reduction of rare earth fluorides
Inventor:
Ram A. Sharma
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Dec 6, 1990
Inventor
Ram A. Sharma
Assignee (at issue)
General Motors 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.