Patents by Inventor Michael Scott McRae-Williams

Michael Scott McRae-Williams 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).

  • Delamination process
    Patent number: 6793709
    Abstract: A process for recycling an electronic scrap material comprising a metal provided on a polymeric substrate, which method comprises: milling flaked electronic scrap material with a bead impact material in the presence of water to produce flakes of cleaned polymeric substrate; adding water to the milled material and separating the flakes of cleaned polymeric substrate from metal-containing material; dewatering and drying the flakes of cleaned polymeric substrate; and treating the metal-containing material to recover the metal.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: September 21, 2004
    Assignee: METSS.org, LLC
    Inventors: John S Hall, Michael Scott McRae-Williams, Kenneth James Heater, Robert Mark Hodge
  • Recovery of precious metals
    Publication number: 20030154822
    Abstract: A process for leaching precious metals from material containing precious metals, such as oxidic and sulfidic gold-bearing ores, is disclosed. The process includes the steps of: (i) leaching the precious metal with a leach solution containing a thiosulfate-based lixiviant; (ii) treating the material by oxidising precious metal in the material into a form that is leachable in a subsequent leaching step; and thereafter as a separate step.
    Type: Application
    Filed: March 16, 2003
    Publication date: August 21, 2003
    Inventors: John Hall, Michael Scott McRae-Williams, Paul Andrew White, Terence William Turney, Phillip Stephen Casey, Tracey Markley
  • Delamination process
    Publication number: 20030131688
    Abstract: A process for recycling an electronic scrap material comprising a metal provided on a polymeric substrate, which method comprises: milling flaked electronic scrap material with a bead impact material in the presence of water to produce flakes of cleaned polymeric substrate; adding water to the milled material and separating the flakes of cleaned polymeric substrate from metal-containing material; dewatering and drying the flakes of cleaned polymeric substrate; and treating the metal-containing material to recover the metal.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 17, 2003
    Inventors: John S Hall, Michael Scott McRae-Williams, Kenneth James Heater, Robert Mark Hodge