Patents by Inventor Kenneth Gordon Baxter

Kenneth Gordon Baxter 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).

  • Ore leach method with aqueous sulfuric acid containing ferric ions
    Patent number: 7799295
    Abstract: There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream including a solution formed by reaction of basic ferric sulphate with excess suphuric acid. Integrated methods of forming and releaching basic ferric sulphate are also described.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: September 21, 2010
    Assignee: OZ Minerals Limited
    Inventors: David Dreisinger, Graham Pratt, Kenneth Gordon Baxter
  • Leach Extraction Method
    Publication number: 20080050293
    Abstract: There is provided a method for leach extraction of copper/iron/sulphur ores and concentrates including leaching the mineral with an aqueous stream containing ferric ions and sulphuric acid in the presence of oxygen, the aqueous stream including a solution formed by reaction of basic ferric sulphate with excess suphuric acid. Integrated methods of forming and releaching basic ferric sulphate are also described.
    Type: Application
    Filed: November 3, 2004
    Publication date: February 28, 2008
    Inventors: David Dreisinger, Graham Pratt, Kenneth Gordon Baxter