Patents by Inventor Woo-young Na

Woo-young Na 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).

  • Electron gun cathode and manufacturing method therefor
    Patent number: 5013965
    Abstract: An electron gun cathode and a manufacturing method therefor includes a unitary cylindrical sleeve having a bottom with through-holes for the passage of the terminals of a heater. The heater is disposed in a closed space formed by the sleeve and a base joined to the sleeve opposite its bottom. The heater is sealed in the closed space of the sleeve and base to promote thermal efficiency, reduce heat loss between the base and the sleeve, and reduce power consumption of the cathode.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: May 7, 1991
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventors: Suk-bong Shon, Woo-young Na