Patents by Inventor Samuel Faust Burkhardt

Samuel Faust Burkhardt 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).

  • High discharge capacity electrolytic manganese dioxide and methods of producing the same
    Patent number: 6638401
    Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: October 28, 2003
    Assignee: Kerr-McGee Chemical LLC
    Inventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell
  • High discharge capacity electrolytic manganese dioxide and methods of producing the same
    Patent number: 6527941
    Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising specific amounts of sulfuric acid and manganese sulfate in the electrolytic cell and maintaining the amounts of the sulfuric acid and manganese ion in the solution at a ratio of sulfuric acid to manganese ion greater than 2. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot and the high discharge capacity EMD produced is deposited on the anodic electrode.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: March 4, 2003
    Assignee: Kerr-McGee Chemical, LLC
    Inventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell
  • High discharge capacity electrolytic manganese dioxide and methods of producing the same
    Publication number: 20010031239
    Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising specific amounts of sulfuric acid and manganese sulfate in the electrolytic cell and maintaining the amounts of the sulfuric acid and manganese ion in the solution at a ratio of sulfuric acid to manganese ion greater than 2. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot and the high discharge capacity EMD produced is deposited on the anodic electrode.
    Type: Application
    Filed: December 22, 2000
    Publication date: October 18, 2001
    Inventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell
  • Method of producing high discharge capacity electrolytic manganese dioxide
    Patent number: 6214198
    Abstract: The present invention provides improved cathode material comprised of electrolytic manganese dioxide having high discharge capacity at high discharge rates and methods of producing such electrolytic manganese dioxide by electrolysis in an electrolytic cell. The methods are basically comprised of maintaining a heated high purity aqueous electrolyte solution comprising sulfuric acid and manganese sulfate in the electrolytic cell, the manganese sulfate being present in the solution whereby it contains in the range of from about 5 to about 50 grams of manganese per liter of solution. An electric current is applied to the electrodes of the electrolytic cell whereby the anodic electrode current density is in the range of from about 2.5 to about 6 amperes per square foot.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 10, 2001
    Assignee: Kerr-McGee Chemical LLC
    Inventors: Terrell Neils Andersen, Samuel Faust Burkhardt, Wilmont Frederick Howard, Jr., Richard F. Wohletz, Vahid Kazerooni, Mohammad Reza Moumenzadeh, Amy Wren Unsell