Patents by Inventor Robert Bruce Messenger

Robert Bruce Messenger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reductive ammoniacal leaching of nickel and cobalt bearing materials
    Patent number: 7601314
    Abstract: A process for the recovery of nickel and/or cobalt from an impure nickel, cobalt or mixed nickel/cobalt material including the steps of: a) providing a nickel, cobalt or mixed nickel/cobalt material; and b) contacting the nickel, cobalt or mixed nickel/cobalt material with a feed ammoniacal ammonium carbonate solution and a reductant in a leach step.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: October 13, 2009
    Assignee: BHP Billiton SSM Technology Pty Ltd
    Inventors: Peter Allan Anderson, Mark Fisher, John Ernest Fittock, Victoria Margaret Hultgren, Erin Maree Jones, Robert Bruce Messenger, Adam Sean Moroney