Patents by Inventor Stuart E. Libby

Stuart E. Libby 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).

  • Electrolytic capacitor with codeposited noble metal/base metal cathode element and method for making
    Patent number: 5043849
    Abstract: Codeposited noble metal/base metal cathode elements provide electrolytic capacitors with high volumetric efficiencies. The requisite codeposition is obtained by electrodeposition of the metals onto the interior surface of capacitor cases from solutions of the metal salts.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: August 27, 1991
    Assignee: Tansistor Electronics, Inc.
    Inventor: Stuart E. Libby
  • Capacitor tantalum surface for use as a counterelectrode device and method
    Patent number: 4942500
    Abstract: A counterelectrode and a method for providing the counterelectrode wherein an inherently high effective capacitance surface is formed on tantalum. The oxide forming ability of the tantalum surface is destroyed by removing existing oxide from the surface, depositing on the surface a layer of a platinum family metal, and alloying the deposited metal with the tantalum thereby forming an alloy layer. A second layer of metal, also selected from the platinum family, may then be deposited over the alloy layer. Alternately the platinum family metal may be sputtered or clad onto the surface of the tantalum with or without an alloying step. The second deposition produces a spongy layer and is accomplished by conventional electrolytic techniques.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: July 17, 1990
    Assignee: Tansitor Electronics, Inc.
    Inventors: Stuart E. Libby, William J. Lindskog, Gilbert Green, Jr.
  • Capacitor tantalum surface for use as a counterelectrode device and method
    Patent number: 4780797
    Abstract: A counterelectrode and a method for providing the counterelectrode wherein an inherently high effective capacitance surface is formed on tantalum. The oxide forming ability of the tantalum surface is destroyed by removing existing oxide from the surface, depositing on the surface a non-continuous layer of a platinum family metal, and alloying the deposited metal with the tantalum thereby forming alloy layer. A second layer of metal, also selected from the platinum family, may then be deposited over the alloy layer. Alternately the platinum family metal may be sputtered onto the surface of the tantalum with or without an the alloying step. The second deposition produces a spongy layer and is accomplished by conventional electrolytic techniques.
    Type: Grant
    Filed: December 16, 1987
    Date of Patent: October 25, 1988
    Assignee: Tansitor Electronic, Inc.
    Inventor: Stuart E. Libby