Patents by Inventor Jimmy Ludlow

Jimmy Ludlow 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).

  • Insulating support for ion conductor stack
    Patent number: 6117288
    Abstract: An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: September 12, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stuart Adler, Raymond Ashton Cutler, Brett Tamatea Henderson, Jimmy Ludlow, Robin Edward Richards, Dale M. Taylor, Merrill Anderson Wilson
  • Ion conductor stack with offset seals and biasing electrodes
    Patent number: 6042703
    Abstract: An electrochemical device for separating oxygen from an oxygen-containing gas comprises a plurality of planar ion-conductive solid electrolyte plates and electrically-conductive gas-impermeable interconnects assembled in a multi-cell stack. Electrically-conductive anode and cathode material is applied to opposite sides of each electrolyte plate. A gas-tight anode seal is bonded between the anode side of each electrolyte plate and the anode side of the adjacent interconnect. A biasing electrode, applied to the anode side of each electrolyte plate between the anode seal and the edge of the anode, eliminates anode seal failure by minimizing the electrical potential across the seal. The seal potential is maintained below about 40 mV and preferably below about 25 mV. A gas-tight seal is applied between the cathode sides of each electrolyte plate and the adjacent interconnect such that the anode and cathode seals are radially offset on opposite sides of the plate.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: March 28, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stuart Adler, Raymond Ashton Cutler, Brett Tamatea Henderson, Jimmy Ludlow, Robin Edward Richards, Dale M. Taylor, Merrill Anderson Wilson