Granted Patent
Utility
US 6,054,105 · App. 09/200,712
Process for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solution
Inventor:
David L. Jones
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Nov 27, 1998
Inventor
David L. Jones
Assignee (at issue)
Cominco Engineering Services Ltd.
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.