Patents by Inventor Earl Lankheet

Earl Lankheet 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).

  • Methods of treating electrodes and gas sensors comprising the electrodes
    Patent number: 7241477
    Abstract: A method for forming an electrode comprises: combining a platinum precursor with a gold precursor to form an electrode ink; forming the electrode ink into an electrode precursor; firing the electrode precursor to form the electrode; treating the electrode in an environment having an oxygen partial pressure of less than or equal to 500 ppm oxygen for a period of time sufficient produce an electrode with an exposed surface gold concentration of greater than or equal to about 6 times a bulk gold concentration in the electrode.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: July 10, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Fenglian Chang, Rick D. Kerr, Earl Lankheet, David A. Thompson
  • Gas sensors and methods of manufacture
    Publication number: 20070114130
    Abstract: Disclosed herein is a gas sensor that comprises a sensor cell, a sensing side support layer, and a reference side support layer. The sensor cell comprises an electrolyte layer, a sensing electrode and a reference electrode, wherein the sensing electrode is disposed on a sensing side of the electrolyte layer, and the reference electrode is disposed on a reference side of the electrolyte layer. The reference side has a reference thickness of about 40% to about 160% of a sensing thickness of the sensing side. Methods for manufacturing gas sensors are also disclosed.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 24, 2007
    Inventors: Earl Lankheet, Paul Ruterbusch, David Quinn, Fred Bolf
  • Methods of treating electrodes and gas sensors comprising the electrodes
    Publication number: 20050016841
    Abstract: A method for forming an electrode comprises: combining a platinum precursor with a gold precursor to form an electrode ink; forming the electrode ink into an electrode precursor; firing the electrode precursor to form the electrode; treating the electrode in an environment having an oxygen partial pressure of less than or equal to 500 ppm oxygen for a period of time sufficient produce an electrode with an exposed surface gold concentration of greater than or equal to about 6 times a bulk gold concentration in the electrode.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 27, 2005
    Inventors: Fenglian Chang, Rick Kerr, Earl Lankheet, David Thompson