Patents by Inventor Seok-Bong Shon

Seok-Bong Shon 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).

  • Directly heated cathode structure
    Patent number: 5831379
    Abstract: A directly heated cathode structure includes at least one porous pellet containing electron emission material and filaments secured to at least three side surfaces of the porous pellet to support the pellet stably and prevent vibration caused by shock and potential deformation. Each filament is supported by an insulating block and more than one pellet may be mounted on a single insulating block. As a result, a highly reliable cathode ray tube can be manufactured.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: November 3, 1998
    Assignee: Samsung Display Devices Co., Ltd.
    Inventors: Bong-Uk Jeong, Chang-Seob Kim, Dong-Gil Jang, Seok-Bong Shon