Patents by Inventor Judith Barnes

Judith Barnes 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).

  • A/C—D/C power system with internal fuel cell
    Patent number: 7119458
    Abstract: An A/C-D/C-F/C power system is provided that includes a portable power unit that can accept electricity from a number of alternative sources including an AC power source, a DC power source, a battery, and a direct oxidation fuel cell. In accordance with one embodiment of the invention, the fuel cell is used to either recharge a battery, or to power an application device, when the AC source and/or the DC source are unavailable. The A/C-D/C-F/C system of the present invention also includes signal processing and signal conditioning circuitry in a power combiner and conditioner, which condition the voltage signal to deliver power to the application device in a manner that is consistent with device requirements.
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: October 10, 2006
    Assignee: MTI Microfuel Cells, Inc.
    Inventors: Judith A. Barnes, James T. Bunch, Jr.
  • A/C - D/C power system with internal fuel cell
    Publication number: 20050040785
    Abstract: An A/C-D/C-F/C power system is provided that includes a portable power unit that can accept electricity from a number of alternative sources including an AC power source, a DC power source, a battery, and a direct oxidation fuel cell. In accordance with one embodiment of the invention, the fuel cell is used to either recharge a battery, or to power an application device, when the AC source and/or the DC source are unavailable. The A/C-D/C-F/C system of the present invention also includes signal processing and signal conditioning circuitry in a power combiner and conditioner, which condition the voltage signal to deliver power to the application device in a manner that is consistent with device requirements.
    Type: Application
    Filed: August 19, 2003
    Publication date: February 24, 2005
    Inventors: Judith Barnes, James Bunch