Patents by Inventor Andrew Michael Fogg

Andrew Michael Fogg 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 regenerating a layered double hydroxide
    Patent number: 7084085
    Abstract: A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the solution before or after the precipitation step with a layered double hydroxide in order to remove impurities from the solution by intercalation into the layers in the double hydroxide. The double hydroxide may contain layers of the formula: [LiAl2(OH)6]+.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: August 1, 2006
    Assignee: Curtain University of Technology
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg, Gordon Michael Parkinson
  • Process for producing alumina
    Publication number: 20030064019
    Abstract: A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the solution before or after the precipitation step with a layered double hydroxide in order to remove impurities from the solution by intercalation into the layers in the double hydroxide. The double hydroxide may contain layers of the formula: [LiAl2(OH)6]+.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 3, 2003
    Applicant: Curtain University of Technology
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg, Gordon Michael Parkinson
  • Process for removing impurities from bauxite
    Patent number: 6479024
    Abstract: A process for producing alumina from bauxite is described in which bauxite is treated with an alkali to form a mixture comprising a solution of aluminum-containing ions and alumina trihydrate is precipitated from the solution. The process comprises treatment of the solution before or after the precipitation step with a layered double hydroxide in order to remove impurities from the solution by intercalation into the layers in the double hydroxide. The double hydroxide may contain layers of the formula: [LiAl2(OH)6]+.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: November 12, 2002
    Assignee: Curtin University of Technology
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg, Gordon Michael Parkinson
  • Separation process
    Patent number: 6391823
    Abstract: A process for separating a compound from a mixture of different compounds is disclosed for compounds comprising at least two negatively charged groups connected by a linker group. The process comprises treating the mixture with a material comprising layers containing at least two different types of cation disposed in an ordered arrangement within each layer, such as layers of formula LiAl2(OH)6+, in order to separate the compound from the mixture by selective intercalation of the compound into the material.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: May 21, 2002
    Assignee: Isis Innovation Limited
    Inventors: Dermot Michael O'Hare, Andrew Michael Fogg