Patents by Inventor Dean Robert Butler

Dean Robert Butler 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).

  • SMELTING METHOD
    Publication number: 20120144959
    Abstract: A method of recovering gold from a gold containing source material comprising: forming a molten pool comprising at least one metal selected from the group consisting of copper, silver, gold and platinum group metals; and adding at least part of the source material into the molten pool of metal.
    Type: Application
    Filed: July 1, 2010
    Publication date: June 14, 2012
    Applicant: PRECIOUS METALS RECOVERY PTY LTD
    Inventor: Dean Robert Butler