Patents by Inventor Cheul U Kim

Cheul U Kim 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).

  • Energy recovery circuit and energy recovery method using the same
    Patent number: 7009823
    Abstract: An energy recovery circuit wherein an energy stored in an inductor is applied to a panel to reduce a charge time and improve an energy recovery efficiency. In the energy recovery circuit, a switch, a capacitor and an inductor is provided to form a closed loop. A panel capacitor is equivalently provided at the panel. When the switch is turned on, a current component of an energy is charged in the inductor by an energy charged in the capacitor. When the switch is turned off, an inverse voltage is inducted into the inductor and a closed loop is formed by the inductor and the panel capacitor, thereby applying only an inverse voltage of the inductor to the panel capacitor.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: March 7, 2006
    Assignee: LG Electronics Inc.
    Inventors: Won Sik Yoon, Feel Soon Kang, Han Woong Park, Cheul U Kim
  • Energy recovery circuit and energy recovery method using the same
    Publication number: 20040001290
    Abstract: An energy recovery circuit wherein an energy stored in an inductor is applied to a panel to reduce a charge time and improve an energy recovery efficiency. In the energy recovery circuit, a switch, a capacitor and an inductor is provided to form a closed loop. A panel capacitor is equivalently provided at the panel. When the switch is turned on, a current component of an energy is charged in the inductor by an energy charged in the capacitor. When the switch is turned off, an inverse voltage is inducted into the inductor and a closed loop is formed by the inductor and the panel capacitor, thereby applying only an inverse voltage of the inductor to the panel capacitor.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: LG Electronics Inc.
    Inventors: Won Sik Yoon, Feel Soon Kang, Han Woong Park, Cheul U Kim