Patents by Inventor Keith Phillip Williams

Keith Phillip 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).

  • Metal recovery process
    Patent number: 8945489
    Abstract: A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: February 3, 2015
    Assignee: Minex Technologies Limited
    Inventors: Robert John Bowell, Keith Phillip Williams, Brian Matthew Dey
  • Metal Recovery Process
    Publication number: 20120114539
    Abstract: A process for recovering a metal chloride or mixed metal chloride from a solid waste material comprising recoverable metal containing constituents produced by lead, copper or zinc smelting and refining processes, said process comprising the steps of: (i) heating the solid waste material; (ii) treating the heated material of step (i) with a gaseous chloride to form a gaseous metal chloride containing product; and (iii) treating the gaseous metal chloride containing product of step (ii) to recover the metal chloride or mixed metal chloride. The metal chloride may be further treated to extract the metal itself.
    Type: Application
    Filed: January 15, 2010
    Publication date: May 10, 2012
    Applicant: MINEX TECHNOLOGIES LIMITED
    Inventors: Robert John Bowell, Keith Phillip Williams, Brian Matthew Dey