Granted Patent
Utility
US 6,383,460 · App. 09/200,713
Process for the recovery of nickel and/or cobalt from a concentrate
Inventor:
David L. Jones
Patented Case
View Patent ↗
Granted: May 7, 2002
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.