Patents by Inventor Gyung-Sang Lee

Gyung-Sang Lee 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).

  • Cathode ray tube
    Patent number: 6737794
    Abstract: A cathode ray tube having a cathode comprising a sleeve with a heater. installed therein and a base metal with a side portion covering an outer circumference of the sleeve and an upper surface portion covering an upper side: of the sleeve, satisfies the following formula: tS≦tB1≦2tS, wherein tB1 is a thickness of the side portion of the base metal and tS is a thickness of the sleeve. Therefore, the warm-up time taken for formation of an image after power is applied to the cathode ray tube can be shortened.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: May 18, 2004
    Assignee: LG Philips Displays Korea Co., Ltd.
    Inventor: Gyung-Sang Lee
  • Cathode ray tube
    Publication number: 20040041510
    Abstract: A cathode ray tube having a cathode comprising a sleeve with a heater installed therein and a base metal with a side portion covering an outer circumference of the sleeve and an upper surface portion covering an upper side of the sleeve, satisfies the following formula: tS≦tB1≦2tS, wherein tB1 is a thickness of the side portion of the base metal and tS is a thickness of the sleeve. Therefore, the warm-up time taken for formation of an image after power is applied to the cathode ray tube can be shortened.
    Type: Application
    Filed: January 24, 2003
    Publication date: March 4, 2004
    Inventor: Gyung-Sang Lee