Patents by Inventor Joseph Lansford

Joseph Lansford 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).

  • Capacitive AC isolation apparatus for electric vehicle battery charging systems
    Patent number: 6104161
    Abstract: AC isolation apparatus, such as is provided by an AC isolation capacitor disposed between unexposed and exposed portions of the chassis of a charging system or an electric vehicle. The AC isolation apparatus or capacitor provides a high impedance at 50/60 Hertz between the electric vehicle and the charging system, thus isolating their respective chassis grounds.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: August 15, 2000
    Assignee: General Motors Corporation
    Inventors: Sung Chung, Joseph Lansford, John G. Hayes, Vito J. Marchione, Kwang Yi