Patents by Inventor Sheldon Pudick

Sheldon Pudick 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).

  • Fuel cell with electrolyte matrix assembly
    Patent number: 4751062
    Abstract: This invention is directed to a fuel cell employing a substantially immobilized electrolyte imbedded therein and having a laminated matrix assembly disposed between the electrodes of the cell for holding and distributing the electrolyte. The matrix assembly comprises a non-conducting fibrous material such as silicon carbide whiskers having a relatively large void-fraction and a layer of material having a relatively small void-fraction.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: June 14, 1988
    Assignee: Engelhard Corporation
    Inventors: Arthur Kaufman, Sheldon Pudick, Chiu L. Wang
  • Process for forming integral edge seals in porous gas distribution plates utilizing a vibratory means
    Patent number: 4728533
    Abstract: A process for forming an integral edge seal in a gas distribution plate for use in a fuel cell. A seal layer is formed along an edge of a porous gas distribution plate by impregnating the pores in the layer with a material adapted to provide a seal which is operative dry or when wetted by an electrolyte of a fuel cell. Vibratory energy is supplied to the sealing material during the step of impregnating the pores to provide a more uniform seal throughout the cross section of the plate.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 1, 1988
    Assignee: Engelhard Corporation
    Inventors: Haim Feigenbaum, Sheldon Pudick
  • Corrosion protected, multi-layer fuel cell interface
    Patent number: 4605602
    Abstract: An improved interface configuration for use between adjacent elements of a fuel cell stack. The interface is impervious to gas and liquid and provides resistance to corrosion by the electrolyte of the fuel cell. The multi-layer configuration for the interface comprises a non-cupreous metal-coated metallic element to which is film-bonded a conductive layer by hot pressing a resin therebetween. The multi-layer arrangement provides bridging electrical contact.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: August 12, 1986
    Assignee: Engelhard Corporation
    Inventors: Haim Feigenbaum, Sheldon Pudick, Chiu L. Wang
  • Edge seal for a porous gas distribution plate of a fuel cell
    Patent number: 4450212
    Abstract: In an improved seal for a gas distribution plate of a fuel cell, a groove is provided extending along an edge of the plate. A member of resinous material is arranged within the groove and a paste comprising an immobilized acid is arranged surrounding the member and substantially filling the groove. The seal, which is impervious to the gas being distributed, is resistant to deterioration by the electrolyte of the cell.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 22, 1984
    Assignee: Engelhard Corporation
    Inventors: Haim Feigenbaum, Sheldon Pudick, Rajindar Singh