Patents by Inventor Jin Yeol Choi

Jin Yeol Choi 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).

  • Patent number: 11306374
    Abstract: Provided is a high-strength aluminum alloy including 2.0 to 13.0% by weight of copper (Cu), 0.4 to 4.0% by weight of manganese (Mn), 0.4 to 2.0% by weight of iron (Fe), 6.0 to 10.0% by weight of silicon (Si), greater than 0.0% by weight and 7.0 or less % by weight of zinc (Zn), greater than 0.0% by weight and 2.0 or less % by weight of magnesium (Mg), greater than 0.0% by weight and 1.0 or less % by weight of chromium (Cr), greater than 0.0% by weight and 3.0 or less % by weight of nickel (Ni), greater than 0.0% by weight and 0.05 or less % by weight of production-induced impurities, and the balance of aluminum (Al).
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: April 19, 2022
    Assignee: GAM CO., LTD.
    Inventors: Jin Yeol Choi, Byung-Cheol Lee
  • Publication number: 20200056269
    Abstract: Provided is a high-strength aluminum alloy including 2.0 to 13.0% by weight of copper (Cu), 0.4 to 4.0% by weight of manganese (Mn), 0.4 to 2.0% by weight of iron (Fe), 6.0 to 10.0% by weight of silicon (Si), greater than 0.0% by weight and 7.0 or less % by weight of zinc (Zn), greater than 0.0% by weight and 2.0 or less % by weight of magnesium (Mg), greater than 0.0% by weight and 1.0 or less % by weight of chromium (Cr), greater than 0.0% by weight and 3.0 or less % by weight of nickel (Ni), greater than 0.0% by weight and 0.05 or less % by weight of production-induced impurities, and the balance of aluminum (Al).
    Type: Application
    Filed: February 14, 2018
    Publication date: February 20, 2020
    Inventors: Jin Yeol CHOI, Byung-Cheol LEE
  • Patent number: 6710532
    Abstract: An electron gun is provided for a CRT. The electrode gun includes three cathodes for emitting electron beams, a plurality of acceleration electrodes, and a focus electrode and an anode. The focus electrode and the anode each include an opposite rim having a single electron beam pass-through hole with a vertical width V and a horizontal width H, and an electrostatic field control body positioned at a distance D from the rim, with a bridge width ‘t’, and a vertical width v and a horizontal width h of a central electron beam pass-through hole, wherein the electrostatic field control body and the focus electrode and the anode are configured to satisfy the following equation: (VxvxD)/29≧H−(2×S), where, S denotes a sum of the horizontal width h and the bridge width t of the electrostatic field control body. Spherical aberration is prevented or reduced, improving a vertical resolution of the picture.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: March 23, 2004
    Assignee: LG Electronics Inc.
    Inventor: Jin Yeol Choi
  • Patent number: 6515438
    Abstract: Electron gun in a color CRT including a controlling electrode and an accelerating electrode each having a distance S0 between a central electron beam pass through hole and an outer electron beam pass through hole for passing electron beams emitted from cathodes, a pre-focusing electrode having a distance S1 between a central electron beam pass through hole and an outer electron beam pass through hole, a focusing electrode and an anode each having a rim at an opposite part for forming single electron beam pass through hole and an electrostatic field controlling body inside of the rim, for forming a large sized main focusing electrostatic lens by a potential difference, and diverging means for diverging the outer electron beams incident on the focusing electrode from the pre-focusing electrode outwardly with respect to the central electron beam, wherein a ratio WS/H of a sum WS of a horizontal diameter of the central electron beam pass through hole of the electrostatic field controlling body and a minimum width
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: February 4, 2003
    Assignee: LG Electronics Inc.
    Inventor: Jin Yeol Choi
  • Publication number: 20020079819
    Abstract: An electron gun is provided for a CRT. The electrode gun includes three cathodes for emitting electron beams, a plurality of acceleration electrodes, and a focus electrode and an anode.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 27, 2002
    Applicant: LG Electronics Inc.
    Inventor: Jin Yeol Choi
  • Publication number: 20020043936
    Abstract: Electron gun in a color CRT including a controlling electrode and an accelerating electrode each having a distance S0 between a central electron beam pass through hole and an outer electron beam pass through hole for passing electron beams emitted from cathodes, a pre-focusing electrode having a distance S1 between a central electron beam pass through hole and an outer electron beam pass through hole, a focusing electrode and an anode each having a rim at an opposite part for forming single electron beam pass through hole and an electrostatic field controlling body inside of the rim, for forming a large sized main focusing electrostatic lens by a potential difference, and diverging means for diverging the outer electron beams incident on the focusing electrode from the pre-focusing electrode outwardly with respect to the central electron beam, wherein a ratio WS/H of a sum WS of a horizontal diameter of the central electron beam pass through hole of the electrostatic field controlling body and a minimum width
    Type: Application
    Filed: October 9, 2001
    Publication date: April 18, 2002
    Applicant: LG Electronics Inc.
    Inventor: Jin Yeol Choi
  • Patent number: 6184617
    Abstract: An electron gun for a color cathode ray tube contains a cathode, first grid, second grid and third grids, sequentially disposed between the cathode and a screen, and wherein the vertical length of electron beam passing hole formed on the first and third grids is longer than the horizontal length thereof and the vertical length of an electron beam passing hole formed on the second grid is shorter than the horizontal length thereof.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: February 6, 2001
    Assignee: Goldstar Co., Ltd.
    Inventor: Jin Yeol Choi