Patents Assigned to Sofco
  • Patent number: 7658788
    Abstract: An ion transport membrane system comprising (a) a pressure vessel having an interior, an inlet adapted to introduce gas into the interior of the vessel, an outlet adapted to withdraw gas from the interior of the vessel, and an axis; (b) a plurality of planar ion transport membrane modules disposed in the interior of the pressure vessel and arranged in series, each membrane module comprising mixed metal oxide ceramic material and having an interior region and an exterior region; and (c) one or more gas flow control partitions disposed in the interior of the pressure vessel and adapted to change a direction of gas flow within the vessel.
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: February 9, 2010
    Assignees: Air Products and Chemicals, Inc., SOFCO-EFS Holdings LLC
    Inventors: Michael Jerome Holmes, Theodore R. Ohrn, Christopher Ming-Poh Chen
  • Patent number: 6767376
    Abstract: An auto-thermal reformer assembly is provided having a plurality of self-contained reformer modules positioned within a pressure vessel. The reformer modules each contain catalyst for inducing reforming reactions to produce hydrogen rich gas. At least one heat exhanger is provided for transferring heat from the hydrogen rich gas to the reactants entering or inside of the pressure vessel.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: July 27, 2004
    Assignee: SOFCo-EFS Holdings, L.L.C.
    Inventors: Mark A. Perna, Andrew F. Kisik, Stephen W. Scoles, Ray L. Sullivan
  • Patent number: 6376117
    Abstract: A fuel cell having an anode and a cathode side with fuel flowing over the anode side and air over the cathode side has a staging plate located on the anode side of the fuel cell to divide the flow of fuel to two different sections of the anode. A second staging plate may be used to divide the flow of fuel to three different sections of the anode and various apertures may be formed in the plates, such as rectangles triangles or ovals, to direct fuel flow to desired areas of the anode.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 23, 2002
    Assignee: SOFCO L.P.
    Inventors: Milind V. Kantak, Thomas L. Cable
  • Patent number: 6368739
    Abstract: The invention comprises a solid oxide fuel cell system comprising at least two solid oxide fuel cell stacks and at least one extension member. Each solid oxide fuel cell stack includes a plurality of solid oxide fuel cells. Each cell is separated by an interconnect. The extension member joins at least one interconnect of one of the solid oxide fuel cell stacks with a corresponding interconnect of another of the solid oxide fuel cell stacks. The invention further includes a method of fabrication.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: April 9, 2002
    Assignee: Sofco
    Inventors: Lyman J. Frost, Singaravelu Elangovan, Joseph Jay Hartvigsen, Mark Timper, Dennis L. Larsen
  • Patent number: 6326095
    Abstract: A fuel cell manifold arrangement includes a fuel cell stack and a manifold enclosure connected to and sealed to an inlet side of the fuel cell stack and defining with the stack a gas plenum for receiving a fuel gas for the fuel cell stack. A catalyst screen is connected to the manifold enclosure for defining a gas passage for passing fuel gas and for containing a catalyst that is bounded by the screen. The manifold enclosure has a gas inlet for receiving fuel gas, the gas inlet communicating with the screen for passing fuel gas through the screen and past the catalyst. A plate in the manifold enclosure separates the catalyst from the plenum and heat insulation is on at least part of the manifold enclosure and on at least part of the plate for insulating the manifold enclosure from the fuel cell stack and from an exterior of the manifold enclosure. A passage in the manifold enclosure connects the screen to the plenum for passing fuel gas from the catalyst to the plenum.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: December 4, 2001
    Assignee: Sofco L.P.
    Inventor: Kurt E. Kneidel
  • Patent number: 6265095
    Abstract: An interconnect for solid oxide fuel cells comprises a separator having a cathode side and an anode side, and, at least one compliant sheet of material associated with one of the cathode side and the anode side of the separator. The anode side is associateable with an anode of a first adjacent cell. The cathode side is associateable with a cathode of a second adjacent cell. The at least one compliant sheet of material electrically and mechanically connects the respective anode or cathode with the respective side of the separator plate.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: July 24, 2001
    Assignee: Sofco
    Inventors: Joseph Jay Hartvigsen, Singaravelu Elangovan, Ashok Chandrashekhar Khandkar
  • Patent number: 6224993
    Abstract: An electrolyte, and a process for its formation, for a solid oxide fuel cell comprising an electrolyte plate and a supporting member. The electrolyte plate includes an upper and a lower surface. The support member includes a plurality of non-intersecting support members which are positioned on at least one of the upper and the lower surfaces of the electrolyte plate.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: May 1, 2001
    Assignee: Sofco
    Inventors: Joseph Jay Hartvigsen, Singaravelu Elangovan, Robert Phillip Merrill, Ashok Chandrashekhar Khandkar
  • Patent number: 6183897
    Abstract: An interconnect for a solid oxide fuel cell comprises a gas separator plate and at least one fill material. The gas separator plate includes at least one via extending therethrough. The at least one fill material is positioned within the at least one via, and operatively associated with at least one of a cathode or anode. The invention likewise includes a method for manufacturing the interconnect for a solid oxide fuel cell.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: February 6, 2001
    Assignee: Sofco
    Inventors: Joseph Jay Hartvigsen, Ashok Chandrashckhar Khandkar, Singaravelu Elangovan