Patents by Inventor Eun Ho KHO

Eun Ho KHO 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).

  • Phthalonitrile-based resin with improved impact strength
    Patent number: 11932727
    Abstract: Provided is a phthalonitrile-based resin, comprising repeat units formed by the reaction of a phthalonitrile compound and a curing agent, wherein the phthalonitrile compound comprises 4,4?-bis(3,4-dicyanophenoxy)diphenyloxide of the following Chemical Formula 1 and 4,4?-bis(3,4-dicyanophenoxy)biphenyl of the following Chemical Formula 2 at a weight ratio of 30:70 to 90:10:
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: March 19, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Seunghee Lee, Sang Woo Kim, Youngdae Kim, Eun Ho Kho
  • Three-dimensional printing ink comprising a phthalonitrile oligomer
    Patent number: 11674045
    Abstract: A three-dimensional printing ink that has a viscosity suitable for three-dimensional printing, and improved performance.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: June 13, 2023
    Assignee: LG CHEM, LTD
    Inventors: Youngdae Kim, Bu Gon Shin, Sang Woo Kim, Seunghee Lee, Eun Ho Kho
  • Curable resin composition comprising a phthalonitrile oligomer and a prepolymer thereof
    Patent number: 11591487
    Abstract: A curable resin composition includes a phthalonitrile oligomer, and a prepolymer thereof. According to the present invention, a curable resin composition, which has melt viscosity that can be controlled within a wide range, and thus, can be applied in a larger number of fields.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: February 28, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Seunghee Lee, Youngdae Kim, Eun Ho Kho, Sang Woo Kim
  • Holographic Light Guide Plate
    Publication number: 20220221719
    Abstract: Disclosed is a holographic waveguide including a light guide unit configured to guide lights; a first holographic optical element disposed on one surface or the other surface of the light guide unit and configured to diffract an input light; a second holographic optical element disposed on any one of the one surface and the other surface, and configured to receive a light diffracted by the first holographic optical element and to direct a part of the received light to the other one of the one surface and the other surface; a third holographic optical element disposed on a surface, and configured to receive diffracted lights by the second holographic optical element and to guide the lights; and a fourth holographic optical element configured to receive a diffracted light by the third holographic optical element, and to allow the light to be output from the light guide unit.
    Type: Application
    Filed: October 6, 2020
    Publication date: July 14, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Eun Ho Kho, Jae Jin Kim, Bu Gon Shin, Dae Han Seo, Min Soo Song
  • A CURABLE RESIN COMPOSITION COMPRISING A PHTHALONITRILE OLIGOMER AND A PREPOLYMER THEREOF
    Publication number: 20210206908
    Abstract: A curable resin composition includes a phthalonitrile oligomer, and a prepolymer thereof. According to the present invention, a curable resin composition, which has melt viscosity that can be controlled within a wide range, and thus, can be applied in a larger number of fields.
    Type: Application
    Filed: September 20, 2019
    Publication date: July 8, 2021
    Inventors: Seunghee Lee, Youngdae Kim, Eun Ho Kho, Sang Woo Kim
  • PHTHALONITRILE-BASED RESIN WITH IMPROVED IMPACT STRENGTH
    Publication number: 20210061953
    Abstract: Provided is a phthalonitrile-based resin, comprising repeat units formed by the reaction of a phthalonitrile compound and a curing agent, wherein the phthalonitrile compound comprises 4,4?-bis(3,4-dicyanophenoxy)diphenyloxide of the following Chemical Formula 1 and 4,4?-bis(3,4-dicyanophenoxy)biphenyl of the following Chemical Formula 2 at a weight ratio of 30:70 to 90:10:
    Type: Application
    Filed: August 22, 2019
    Publication date: March 4, 2021
    Inventors: Seunghee LEE, Sang Woo KIM, Youngdae KIM, Eun Ho KHO
  • THREE-DIMENSIONAL PRINTING INK COMPRISING A PHTHALONITRILE OLIGOMER
    Publication number: 20210047528
    Abstract: A three-dimensional printing ink that has a viscosity suitable for three-dimensional printing, and improved performance.
    Type: Application
    Filed: September 20, 2019
    Publication date: February 18, 2021
    Inventors: Youngdae KIM, Bu Gon SHIN, Sang Woo KIM, Seunghee LEE, Eun Ho KHO