Granted Patent
Utility
US 4,666,512 · App. 06/858,917
Method for recovering vanadium from vanadium-containing ore
Inventors:
Donald J. Hansen, John Goddard, Oreste J. Malacarne
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: May 2, 1986
Inventors
Donald J. Hansen
John Goddard
Oreste J. Malacarne
Assignee (at issue)
U.S. Vanadium Corporation
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.