Patents by Inventor Hyuk Jin JEONG

Hyuk Jin JEONG 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: 11708489
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 0.1-5 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; approximately 0.1-7 parts by weight of zinc oxide; approximately 0.01-2 parts by weight of a C10-20 alkyl phosphate; approximately 0.01-2 parts by weight of a maleic anhydride-graft polymerized rubber polymer; and approximately 0.01-2 parts by weight of a phosphite-based antioxidant, wherein the zinc oxide has an average particle size of approximately 0.5-3 ?m, a specific surface area BET of approximately 1-10 m2/g, a 2? value as the peak position, of 35-37°, in X-ray diffraction analysis, and a crystallite size, represented by relation 1, of approximately 1,000-2,000 ?. The thermoplastic resin composition has excellent antibacterial properties, weather resistance, impact resistance, heat resistance and the like.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: July 25, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Hyuk Jin Jeong, Joon Hyung Yoo, Woo Jin Lee, Tae Gon Kang
  • Publication number: 20210355318
    Abstract: A thermoplastic resin composition of the present invention comprises: a polycarbonate resin; a large-particle diameter rubber polymer having an average particle size of about 500-3,000 nm; an aromatic vinyl copolymer resin; a core-shell graft copolymer; and a phosphorus flame retardant, wherein the core-shell graft copolymer comprises a shell formed by graft polymerization of epoxy group-containing acrylate monomers to a silicon-based rubber polymer core having an average particle size of about 100-300 nm. The thermoplastic resin composition is excellent in hydrolysis resistance, impact resistance, flame retardancy, heat resistance, fluidity, appearance characteristics, etc.
    Type: Application
    Filed: November 18, 2019
    Publication date: November 18, 2021
    Inventors: Woo Jin LEE, Hyuk Jin JEONG
  • Publication number: 20210340373
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a polycarbonate resin; approximately 0.1-5 parts by weight of a rubber-modified aromatic vinyl-based copolymer resin; approximately 0.1-7 parts by weight of zinc oxide; approximately 0.01-2 parts by weight of a C10-20 alkyl phosphate; approximately 0.01-2 parts by weight of a maleic anhydride-graft polymerized rubber polymer; and approximately 0.01-2 parts by weight of a phosphite-based antioxidant, wherein the zinc oxide has an average particle size of approximately 0.5-3 ?m, a specific surface area BET of approximately 1-10 m2/g, a 2? value as the peak position, of 35-37°, in X-ray diffraction analysis, and a crystallite size, represented by relation 1, of approximately 1,000-2,000 ?. The thermoplastic resin composition has excellent antibacterial properties, weather resistance, impact resistance, heat resistance and the like.
    Type: Application
    Filed: December 13, 2019
    Publication date: November 4, 2021
    Inventors: Hyuk Jin JEONG, Joon Hyung YOO, Woo Jin LEE, Tae Gon KANG
  • Publication number: 20210047513
    Abstract: A polycarbonate resin composition of the present invention is characterized by comprising a polycarbonate resin; a polysiloxane-polycarbonate copolymer resin; silicone gum; a metal inorganic compound; a phosphorus flame retardant; and an inorganic filler. The polycarbonate resin composition has excellent properties in terms of flame retardancy, low heat generation characteristics, flame propagation characteristics, low flammability, etc., and does not have smoke toxicity.
    Type: Application
    Filed: April 17, 2019
    Publication date: February 18, 2021
    Inventors: Hyuk Jin JEONG, Ja Kwan KOO, Woo Jin LEE, Tae Gon KANG
  • Patent number: 10745554
    Abstract: Disclosed herein is a thermoplastic resin composition. The thermoplastic resin composition includes: about 100 parts by weight of a polycarbonate resin; about 20 parts by weight to about 130 parts by weight of flat glass fibers coated with an epoxy compound; about 0.5 parts by weight to about 3 parts by weight of a modified polyolefin including a repeat unit represent by Formula 1 and a repeat unit represented by Formula 2; about 5 parts by weight to about 20 parts by weight of a phosphazene compound; and about 0.1 parts by weight to about 5 parts by weight of a fluorinated olefin resin. The thermoplastic resin composition has good properties in terms of impact resistance, rigidity, and/or flame retardancy.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: August 18, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Young Ho Park, So Hyang Shin, Hyuk Jin Jeong
  • Publication number: 20190203041
    Abstract: Disclosed herein is a thermoplastic resin composition. The thermoplastic resin composition includes: about 100 parts by weight of a polycarbonate resin; about 20 parts by weight to about 130 parts by weight of flat glass fibers coated with an epoxy compound; about 0.5 parts by weight to about 3 parts by weight of a modified polyolefin including a repeat unit represent by Formula 1 and a repeat unit represented by Formula 2; about 5 parts by weight to about 20 parts by weight of a phosphazene compound; and about 0.1 parts by weight to about 5 parts by weight of a fluorinated olefin resin. The thermoplastic resin composition has good properties in terms of impact resistance, rigidity, and/or flame retardancy.
    Type: Application
    Filed: December 27, 2018
    Publication date: July 4, 2019
    Inventors: Young Ho PARK, So Hyang SHIN, Hyuk Jin JEONG
  • Patent number: 9790364
    Abstract: A thermoplastic resin composition and a molded article manufactured using the same. The thermoplastic resin composition includes: a polycarbonate resin; a rubber-modified aromatic vinyl graft copolymer; an aromatic vinyl copolymer resin; a phosphorus flame retardant; and inorganic fillers, wherein the rubber-modified aromatic vinyl graft copolymer comprises a first rubber-modified aromatic vinyl graft copolymer comprising a rubber polymer having an average particle diameter (D50) of about 100 nm to about 135 nm and a second rubber-modified aromatic vinyl graft copolymer comprising a rubber polymer having an average particle diameter (D50) of about 250 nm to about 400 nm, and a weight ratio of the first rubber-modified aromatic vinyl graft copolymer to the second rubber-modified aromatic vinyl graft copolymer ranges from about 1:0.1 to about 1:about 10. The thermoplastic resin composition can exhibit excellent properties in terms of fatigue resistance, impact resistance, and flame retardancy.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: October 17, 2017
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Woo Jin Lee, Jo Won Lee, Hyuk Jin Jeong
  • Publication number: 20170044364
    Abstract: A thermoplastic resin composition and a molded article manufactured using the same. The thermoplastic resin composition includes: a polycarbonate resin; a rubber-modified aromatic vinyl graft copolymer; an aromatic vinyl copolymer resin; a phosphorus flame retardant; and inorganic fillers, wherein the rubber-modified aromatic vinyl graft copolymer comprises a first rubber-modified aromatic vinyl graft copolymer comprising a rubber polymer having an average particle diameter (D50) of about 100 nm to about 135 nm and a second rubber-modified aromatic vinyl graft copolymer comprising a rubber polymer having an average particle diameter (D50) of about 250 nm to about 400 nm, and a weight ratio of the first rubber-modified aromatic vinyl graft copolymer to the second rubber-modified aromatic vinyl graft copolymer ranges from about 1:0.1 to about 1:about 10. The thermoplastic resin composition can exhibit excellent properties in terms of fatigue resistance, impact resistance, and flame retardancy.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 16, 2017
    Inventors: Woo Jin LEE, Jo Won LEE, Hyuk Jin JEONG