Patents by Inventor Eui Seok Choi

Eui Seok 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).

  • HETEROCYCLIC COMPOUND, ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME AND COMPOSITION FOR ORGANIC LAYER OF ORGANIC LIGHT EMITTING DEVICE
    Publication number: 20240174687
    Abstract: Disclosed are a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device and a composition for an organic material layer, including the same.
    Type: Application
    Filed: March 31, 2023
    Publication date: May 30, 2024
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Eui-Jeong CHOI, Young-Seok NO, Dong-Jun KIM
  • HETEROCYCLIC COMPOUND, ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME, MANUFACTURING METHOD THEREFOR, AND COMPOSITION FOR ORGANIC MATERIAL LAYER
    Publication number: 20240107878
    Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1, an organic light emitting device comprising the same, a manufacturing method thereof, and an organic material layer composition.
    Type: Application
    Filed: November 30, 2021
    Publication date: March 28, 2024
    Applicant: LT MATERIALS CO., LTD.
    Inventors: Eui-Jeong CHOI, Young-Seok NO, Dong-Jun KIM
  • Crystallized silicate powder by synthesized and high temperature reistant porcelain body having the same
    Patent number: 9315423
    Abstract: The present invention discloses crystallized silicate-synthetic powder comprising a cordierite (2MgO.2Al2O3.5SiO2) crystalline phase, a mullite (3Al2O3.2SiO2) crystalline phase and a corundum (Al2O3) crystalline phase, and discloses a high-heat resistant porcelain body containing the above crystallized silicate-synthetic powder and formed by mixing the crystallized silicate-synthetic powder and kaolin mineral.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: April 19, 2016
    Assignee: Korea Institute of Ceram Choice LTD
    Inventor: Eui Seok Choi
  • CRYSTALLIZED SILICATE POWDER BY SYNTHESIZED AND HIGH TEMPERATURE RESISTANT PORCELAIN BODY HAVING THE SAME
    Publication number: 20150329427
    Abstract: The present invention discloses crystallized silicate-synthetic powder comprising a cordierite (2MgO.2Al2O3.5SiO2) crystalline phase, a mullite (3Al2O3.2SiO2) crystalline phase and a corundum (Al2O3) crystalline phase, and discloses a high-heat resistant porcelain body containing the above crystallized silicate-synthetic powder and formed by mixing the crystallized silicate-synthetic powder and kaolin mineral.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 19, 2015
    Applicant: Korea Institute of Ceram Choice LTD
    Inventor: Eui Seok Choi
  • CRYSTALLIZED SILICATE POWDER BY SYNTHESIZED AND HIGH STRENGTHENED PORCELAIN BODY HAVING THE SAME
    Publication number: 20150329426
    Abstract: The present invention discloses crystallized silicate-synthetic powder comprising a mullite (3Al2O3.2SiO2) crystalline phase, a anorthite (CaO.Al2O3.2SiO2) crystalline phase, and a corundum (Al2O3) crystalline phase, and discloses a high-strengthened porcelain body containing the above crystallized silicate-synthetic powder and formed by mixing the crystallized silicate-synthetic powder and kaolin mineral.
    Type: Application
    Filed: May 14, 2014
    Publication date: November 19, 2015
    Applicant: Korea Institute of Ceram Choice LTD
    Inventor: Eui Seok Choi
  • Crystallized silicate powder by synthesized and high strengthened porcelain body having the same
    Patent number: 9181133
    Abstract: The present invention discloses crystallized silicate-synthetic powder comprising a mullite (3Al2O3.2SiO2) crystalline phase, a anorthite (CaO.Al2O3.2SiO2) crystalline phase, and a corundum (Al2O3) crystalline phase, and discloses a high-strengthened porcelain body containing the above crystallized silicate-synthetic powder and formed by mixing the crystallized silicate-synthetic powder and kaolin mineral.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: November 10, 2015
    Assignee: Korea Institute of Ceram Choice LTD
    Inventor: Eui Seok Choi