Patents by Inventor Duncan William Turner

Duncan William Turner 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).

  • Atmospheric mineral leaching process
    Patent number: 5993635
    Abstract: A method is provided for processing a sulphide mineral composition which at least partly comprises an iron-containing mineral.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: November 30, 1999
    Assignees: M.I.M. Holdings Limited, Highlands Frieda Pty. Limited
    Inventors: Michael Matthew Hourn, Duncan William Turner, Ian Raymond Holzberger