Patents by Inventor Ho NAMGUNG

Ho NAMGUNG 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).

  • Publication number: 20230183474
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. Also disclosed is a method of preparing a thermoplastic resin composition by adding, in a predetermined composition ratio, a polycarbonate resin and a polyester resin to a base resin including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an ?-methyl styrene-vinyl cyanide compound-aromatic vinyl compound copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer. Also disclosed is a thermoplastic resin composition having excellent mechanical properties, moldability, heat resistance, and chemical resistance.
    Type: Application
    Filed: August 19, 2021
    Publication date: June 15, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seokhee JO, Ho NAMGUNG, Junho CHOE, Seong Lyong KIM, Dae San JUNG
  • Publication number: 20230174770
    Abstract: The present disclosure relates to a resin composition including a base resin including a first graft copolymer, a second graft copolymer and a maleimide-based copolymer; a polyolefin elastomer; a polyolefin graft copolymer; and a polyolefin wax. The present disclosure also relates to a molded product molded from the resin composition.
    Type: Application
    Filed: September 28, 2021
    Publication date: June 8, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Dae San JUNG, Jun Ho CHOE, Seong Lyong KIM, Ho NAMGUNG, Seok Hee JO
  • Publication number: 20230145425
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article including the same. Also disclosed is a thermoplastic resin composition prepared by adding a recycled vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound copolymer and a recycled polycarbonate resin to a composition including a vinyl cyanide compound-conjugated diene rubber-aromatic vinyl compound graft copolymer, an ?-methyl styrene-vinyl cyanide compound-aromatic vinyl compound copolymer, and an aromatic vinyl compound-vinyl cyanide compound copolymer according to a predetermined composition ratio.
    Type: Application
    Filed: August 19, 2021
    Publication date: May 11, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seokhee JO, Ho NAMGUNG, Junho CHOE, Seong Lyong KIM, Dae San JUNG
  • Patent number: 11555110
    Abstract: Provided is a heat-resistant resin composition which includes: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including a maleimide-based unit and an aromatic vinyl-based unit; a second styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit; and a third styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit, wherein the second styrene-based copolymer and the third styrene-based copolymer include a vinyl cyan-based unit in mutually different amounts.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: January 17, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Do Hyeong Kim, Ho Namgung, Seong Lyong Kim, Dae San Jung
  • Publication number: 20220380593
    Abstract: Disclosed is a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same, including a thermoplastic resin composition including 100 parts by weight of a base resin including a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound graft copolymer (A); a vinyl cyanide compound-conjugated diene compound-aromatic vinyl compound copolymer (B); an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (C); a vinyl cyanide compound-aromatic vinyl compound copolymer (D); and a branched vinyl cyanide compound-aromatic vinyl compound copolymer (E) and a high-density polyethylene resin (F), a method of preparing the thermoplastic resin composition, and a molded article manufactured using the thermoplastic resin composition.
    Type: Application
    Filed: July 6, 2021
    Publication date: December 1, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Junho CHOE, Seong Lyong KIM, Dae San JUNG, Ho NAMGUNG, Seokhee JO
  • Patent number: 11396596
    Abstract: Provided is a heat-resistant resin composition which includes: a base resin including: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including an aromatic vinyl-based unit and a vinyl cyan-based unit; a second styrene-based copolymer including a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and a carbonate-based polymer; and a third styrene-based copolymer including an aromatic vinyl-based unit and a maleic acid-based unit.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: July 26, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Do Hyeong Kim, Ho Namgung, Seong Lyong Kim, Dae San Jung
  • Publication number: 20220153979
    Abstract: The present invention provides a thermoplastic resin composition which comprises: a diene-based rubber graft polymer; an alkyl-unsubstituted styrene-based polymer; an alkyl-substituted styrene-based polymer comprising an alkyl-substituted styrene-based monomer unit, an alkyl-unsubstituted styrene-based monomer unit, and a vinyl cyanide-based monomer unit; and a maleimide-based polymer having a weight-average molecular weight of 110,000 to 127,000 g/mol.
    Type: Application
    Filed: September 17, 2020
    Publication date: May 19, 2022
    Inventors: Ho NAMGUNG, Do Hyeong KIM, Seong Lyong KIM, Dae San JUNG
  • Publication number: 20210179840
    Abstract: Provided is a heat-resistant resin composition which includes: a base resin including: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including an aromatic vinyl-based unit and a vinyl cyan-based unit; a second styrene-based copolymer including a maleimide-based unit, an aromatic vinyl-based unit, and a vinyl cyan-based unit; and a carbonate-based polymer; and a third styrene-based copolymer including an aromatic vinyl-based unit and a maleic acid-based unit.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 17, 2021
    Inventors: Do Hyeong KIM, Ho NAMGUNG, Seong Lyong KIM, Dae San JUNG
  • Publication number: 20200339799
    Abstract: Provided is a heat-resistant resin composition which includes: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including a maleimide-based unit and an aromatic vinyl-based unit; a second styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit; and a third styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit, wherein the second styrene-based copolymer and the third styrene-based copolymer include a vinyl cyan-based unit in mutually different amounts.
    Type: Application
    Filed: December 4, 2018
    Publication date: October 29, 2020
    Inventors: Do Hyeong KIM, Ho NAMGUNG, Seong Lyong KIM, Dae San JUNG