Patents by Inventor Ikchull Ihm

Ikchull Ihm 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).

  • Method of forming a fluorescent screen
    Patent number: 5322707
    Abstract: The present invention discloses a phosphor slurry composition for color Braun tubes comprising deionized water, phosphor powder, polyvinyl alcohol, sodium dichromate, ethyl silicate and zinc sulfate. A color Braun tube manufactured using a phosphor slurry composition of the present invention shows an excellent mirror reflection effect and high luminescent brightness.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: June 21, 1994
    Assignee: Samsung Electron Devices Co. Ltd.
    Inventors: Ikchull Ihm, Minho Kim
  • Phosphor slurry composition for color Braun tubes
    Patent number: 5310504
    Abstract: The present invention discloses a phosphor slurry composition for color Braun tubes comprising deionized water, phosphor powder, polyvinyl alcohol, sodium dichromate, ethyl silicate and zinc sulfate. A color Braun tube manufactured using a phosphor slurry composition of the present invention shows an excellent mirror reflection effect and high luminescent brightness.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: May 10, 1994
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventors: Ikchull Ihm, Minho Kim, Ichull Ihm
  • Filming liquid composition for color braun tubes
    Patent number: 5264478
    Abstract: The present invention discloses a filming liquid composition for color Braun tubes comprising deionized water, an acrylic emulsion, ammonium oxalate, ethyl silicate, and titanium oxide, aluminium oxide or a mixture thereof. The color Braun tube manufactured using the filming liquid composition shows the characteristics of high reflection efficiency of the aluminium vacuum evaporation film and excellent luminescent brightness of the color Braun tube.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: November 23, 1993
    Assignee: Samsung Electron Devices Co., Ltd.
    Inventors: Minho Kim, Ikchull Ihm