Patents by Inventor Walter G. Bugden

Walter G. Bugden 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).

  • Joining of ceramic components to metal components
    Patent number: 5009357
    Abstract: The invention provides a method of joining together a ceramic component and a metal component. According to the invention a surface of the ceramic component is metallized with a metallizing metal to form a metallized layer thereon. The metal component is then thermocompression bonded to the metallized layer, optionally after the metallized layer is plated with a continuous metal layer. For electrochemical cell applications, the ceramic component is typically alpha-alumina, the metal of the metallized layer is typically selected from tantalum, titanium, vanadium, tungsten and molybdenum, and the metal component typically comprises, in metallic or alloy form, at least one of iron, nickel, cobalt, chromium, manganese or copper.
    Type: Grant
    Filed: July 25, 1989
    Date of Patent: April 23, 1991
    Assignee: Lilliwyte Societe Anonyme
    Inventors: Derrick J. Baker, Walter G. Bugden, Peter R. Smith
  • Electrochemical cell
    Patent number: 4973534
    Abstract: The invention provides a cathode for an electrochemical cell, a cell incorporating the cathode, and a method of rendering the cathode resistant to a drop in capacity associated with cell cycling. The invention involves dispersing a transition metal, other than Ni, Fe, Cr, Co or Mn, in the active cathode substance, the cathode comprising an electronically conductive porous matrix impregnated with sodium aluminium halide molten salt electrolyte containing chloride ions. Said active cathode substance is an chlorinated nickel-containing substance dispersed in the matrix.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: November 27, 1990
    Assignee: Lilliwyte Societe Anonyme
    Inventors: Keith Adendorff, Roy C. Galloway, Walter G. Bugden, Anthony A. Meintjes
  • Manufacture of electrochemical cells
    Patent number: 4772293
    Abstract: The invention provides a method of manufacturing an electrochemical cell housing wherein a beta-alumina tube has an open end attached to a casing via an alpha-alumina ring. In the method the alpha-alumina ring is thermocompression bonded to a metal ring by hot isostatic pressing, the alpha-alumina ring is then glass welded to the open end of the tube, and the metal ring is metal welded to the casing. The invention also provides a cell housing wherein a beta-alumina tube is located in spaced relationship within a metal casing. The tube is glass welded to an alpha-alumina ring which is thermocompression bonded on a curved radially facing surface thereof to a metal ring, the metal ring being metal welded to the casing.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: September 20, 1988
    Assignee: Lilliwyte Societe Anonyme
    Inventors: Walter G. Bugden, Peter R. Smith