Patents by Inventor Nicholas V. Gow

Nicholas V. Gow 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).

  • Method for aqueous gold thiosulfate extraction using copper-cyanide pretreated carbon adsorption
    Patent number: 8500847
    Abstract: A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: August 6, 2013
    Inventors: Courtney Young, Mariam Melashvili, Nicholas V. Gow
  • Method for Aqueous Gold Thiosulfate Extraction Using Copper-cyanide Pretreated Carbon Adsorption
    Publication number: 20110259148
    Abstract: A gold thiosulfate leaching process uses carbon to remove gold from the leach liquor. The activated carbon is pretreated with copper cyanide. A copper (on the carbon) to gold (in solution) ratio of at least 1.5 optimizes gold recovery from solution. To recover the gold from the carbon, conventional elution technology works but is dependent on the copper to gold ratio on the carbon.
    Type: Application
    Filed: April 26, 2011
    Publication date: October 27, 2011
    Inventors: Courtney Young, Mariam Melashvili, Nicholas V. Gow