Patents by Inventor Daniel Frederick Dutton

Daniel Frederick Dutton 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).

  • Process for the Preparation of an Electrolyte
    Publication number: 20090286154
    Abstract: The invention provides a process for preparing a crystalline vanadyl sulphate/vanadous sulphate material, the process including the steps of providing a mixture of vanadium pentoxide (V2O5) and vanadium trioxide (V2O3); adding to the mixture a predetermined volume of a sulphuric acid solution to produce a powder slurry; and heating the slurry at a temperature and for a time sufficient to form a crystalline vanadyl sulphate/vanadous sulphate material. The invention extends to a process for preparing an electrolyte from such a crystalline vanadyl/vanadous sulphate material, including the steps of dissolving the crystalline material in boiling water and adding a stabilising agent, typically phosphoric acid, to stabilise the electrolyte.
    Type: Application
    Filed: October 24, 2006
    Publication date: November 19, 2009
    Applicant: HIGHVELD STEEL AND VANADIUM CORPORATION LIMITED
    Inventors: Andries Gerhardus Dormehl, Daniel Frederick Dutton
  • Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags
    Patent number: 7462337
    Abstract: A method of recovering titanium dioxide from a titanium oxide bearing raw material, such as e.g. steel slags rich in TiO2 includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, hydrolysing the titanyl sulphate and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: December 9, 2008
    Assignees: Highveld Steel and Vanadium Corporation Limited, Rossmali Technology Holdings (Pty) Ltd
    Inventors: Jan Hendrik Becker, Daniel Frederick Dutton
  • Recovery of titanium from titanium bearing materials
    Patent number: 7258847
    Abstract: A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, if present, treating the solution to remove calcium and/or iron, precipitating out the aluminium as aluminium ammonium sulphate, hydrolysing the remaining titanyl sulphate solution and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: August 21, 2007
    Assignees: Highveld Steel and Vanadium Corporation Limited, Rossmali Technology Holdings (Pty) Ltd
    Inventors: Jan Hendrik Becker, Daniel Frederick Dutton
  • Recovery of titanium from titanium bearing materials
    Publication number: 20040237719
    Abstract: A method of recovering titanium dioxide from a raw material additionally containing aluminium includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, if present, treating the solution to remove calcium and/or iron, precipitating out the aluminium as aluminium ammonium sulphate, hydrolysing the remaining titanyl sulphate solution and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.
    Type: Application
    Filed: July 7, 2004
    Publication date: December 2, 2004
    Inventors: Jan Hendrik Becker, Daniel Frederick Dutton
  • Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags
    Publication number: 20040136899
    Abstract: A method of recovering titanium dioxide from a titanium oxide bearing raw material, such as e.g. steel slags rich in TiO2 includes the steps of grinding the titanium dioxide raw material, reacting the particulate raw feed material with sulphuric acid under specified conditions, digesting and filtering the resultant cake material containing titanyl sulphate, hydrolysing the titanyl sulphate and, after washing the hydrolysate, calcining the hydrolysate to produce titanium dioxide.
    Type: Application
    Filed: November 20, 2003
    Publication date: July 15, 2004
    Inventors: Jan Hendrik Bekker, Daniel Frederick Dutton