Patents by Inventor Kyoung Tae Youm

Kyoung Tae Youm 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: 11655335
    Abstract: A thermoplastic resin composition of the present invention comprises: about 45 wt % to about 65 wt % of an aromatic polyamide resin comprising at least one of a repeat unit represented by Formula 1, a repeat unit represented by Formula 2, and a repeat unit represented by Formula 3; about 1 wt % to about 20 wt % of an olefin copolymer; about 15 wt % to about 35 wt % of calcium carbonate; and about 5 wt % to about 25 wt % of zinc oxide, wherein the weight ratio of the calcium carbonate and the zinc oxide (calcium carbonate:zinc oxide) is about 5:1 to about 1:1. The thermoplastic resin composition and a molded article formed therefrom have good properties in terms of plating adhesion, appearance, heat resistance, etc.
    Type: Grant
    Filed: December 31, 2018
    Date of Patent: May 23, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Yeong Deuk Seo, Kyoung Tae Youm, Sang Hwa Lee, Sang Hyun Hong
  • Patent number: 11565513
    Abstract: A polyamide resin composition and a molded article manufactured using the same. The polyamide resin composition includes: about 15 wt % to about 49 wt % of an aromatic polyamide resin including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2 as defined in the specification; about 1 wt % to about 30 wt % of a polyamide resin having a glass transition temperature of about 40° C. to about 120° C.; about 1 wt % to about 20 wt % of an olefin-based copolymer; and about 30 wt % to about 50 wt % of calcium carbonate. The polyamide resin composition and the molded article produced using the same can have good properties in terms of plating adhesion, impact resistance, thermal resistance, fluidity, and/or appearance, and the like.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: January 31, 2023
    Assignee: Lotte Chemical Corporation
    Inventors: Sang Hwa Lee, Yeong Deuk Seo, Kyoung Tae Youm, Sang Hyun Hong
  • Patent number: 11524492
    Abstract: A polyamide resin composition and a molded article manufactured using the same. The polyamide resin composition includes: about 15 wt % to about 49 wt % of an aromatic polyamide resin including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2 as defined in the specification; about 1 wt % to about 30 wt % of a polyamide resin having a glass transition temperature of about 40° C. to about 120° C.; about 1 wt % to about 20 wt % of an olefin-based copolymer; and about 30 wt % to about 50 wt % of calcium carbonate. The polyamide resin composition and the molded article produced using the same can have good properties in terms of plating adhesion, impact resistance, thermal resistance, fluidity, and/or appearance, and the like.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: December 13, 2022
    Assignee: Lotte Chemical Corporation
    Inventors: Sang Hwa Lee, Yeong Deuk Seo, Kyoung Tae Youm, Sang Hyun Hong
  • Patent number: 11091634
    Abstract: The present invention relates to a thermoplastic resin composition and a molded product produced therefrom. In one embodiment, the thermoplastic resin composition comprises: a base resin including a polyphenylene ether resin and a rubber-reinforced polystyrene resin; a styrene-based block copolymer resin; and a hydrocarbon-based oil.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: August 17, 2021
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Kyoung Tae Youm, Yeong Deuk Seo, Sang Hyun Hong
  • Publication number: 20210070935
    Abstract: A thermoplastic resin composition of the present invention comprises: about 45 wt % to about 65 wt % of an aromatic polyamide resin comprising at least one of a repeat unit represented by Formula 1, a repeat unit represented by Formula 2, and a repeat unit represented by Formula 3; about 1 wt % to about 20 wt % of an olefin copolymer; about 15 wt % to about 35 wt % of calcium carbonate; and about 5 wt % to about 25 wt % of zinc oxide, wherein the weight ratio of the calcium carbonate and the zinc oxide (calcium carbonate:zinc oxide) is about 5:1 to about 1:1. The thermoplastic resin composition and a molded article formed therefrom have good properties in terms of plating adhesion, appearance, heat resistance, etc.
    Type: Application
    Filed: December 31, 2018
    Publication date: March 11, 2021
    Inventors: Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hwa LEE, Sang Hyun HONG
  • Publication number: 20210070997
    Abstract: A polyamide resin composition of the present invention comprises: about 40 wt % to about 60 wt % of a polyamide resin comprising a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2; about 0.5 wt % to about 10 wt % of an olefin copolymer; about 0.5 wt % to about 10 wt % of a maleic anhydride-modified olefin copolymer; about 5 wt % to about 15 wt % of calcium carbonate; and about 20 wt % to about 40 wt % of glass fibers. The polyamide resin composition and a molded article formed therefrom have good properties in terms of plating adhesion, impact resistance, heat resistance, appearance properties, and the like.
    Type: Application
    Filed: December 28, 2018
    Publication date: March 11, 2021
    Inventors: Sang Hwa LEE, Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hyun HONG
  • Patent number: 10676609
    Abstract: A thermoplastic elastomer composition and a molded article manufactured using the same. The thermoplastic elastomer composition includes: a styrene block copolymer, an oil, a polyolefin resin, a polystyrene resin, and inorganic fillers, wherein the thermoplastic elastomer composition has a post-molding shrinkage rate of about 0.08% or less, as calculated by Equation 1 defined in the specification.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: June 9, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Kyoung Tae Youm, Nam Hyun Kim, Sang Hyun Hong
  • Publication number: 20200123378
    Abstract: The present invention relates to a thermoplastic resin composition and a molded product produced therefrom. In one embodiment, the thermoplastic resin composition comprises: a base resin including a polyphenylene ether resin and a rubber-reinforced polystyrene resin; a styrene-based block copolymer resin; and a hydrocarbon-based oil.
    Type: Application
    Filed: December 29, 2017
    Publication date: April 23, 2020
    Inventors: Kyoung Tae YOUM, Yeong Deuk SEO, Sang Hyun HONG
  • Publication number: 20190203046
    Abstract: A polyamide resin composition and a molded article manufactured using the same. The polyamide resin composition includes: about 15 wt % to about 49 wt % of an aromatic polyamide resin including a repeat unit represented by Formula 1 and a repeat unit represented by Formula 2 as defined in the specification; about 1 wt % to about 30 wt % of a polyamide resin having a glass transition temperature of about 40° C. to about 120° C.; about 1 wt % to about 20 wt % of an olefin-based copolymer; and about 30 wt % to about 50 wt % of calcium carbonate. The polyamide resin composition and the molded article produced using the same can have good properties in terms of plating adhesion, impact resistance, thermal resistance, fluidity, and/or appearance, and the like.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 4, 2019
    Inventors: Sang Hwa LEE, Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hyun HONG
  • Publication number: 20180186997
    Abstract: A thermoplastic elastomer composition and a molded article manufactured using the same. The thermoplastic elastomer composition includes: a styrene block copolymer, an oil, a polyolefin resin, a polystyrene resin, and inorganic fillers, wherein the thermoplastic elastomer composition has a post-molding shrinkage rate of about 0.08% or less, as calculated by Equation 1 defined in the specification.
    Type: Application
    Filed: December 27, 2017
    Publication date: July 5, 2018
    Inventors: Kyoung Tae YOUM, Nam Hyun KIM, Sang Hyun HONG
  • Patent number: 9842668
    Abstract: A composition for a transparent electrode according to the present invention comprises (A) a carbon nanotube dispersing solution and (B) a metal nanowire solution having a zeta potential with the same polarity as the carbon nanotube dispersing solution, and a transparent electrode coated with the composition for the transparent electrode has superior transmittance, electrical conductivity and transparency.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: December 12, 2017
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
  • Publication number: 20150294751
    Abstract: A composition for a transparent electrode according to the present invention comprises (A) a carbon nanotube dispersing solution and (B) a metal nanowire solution having a zeta potential with the same polarity as the carbon nanotube dispersing solution, and a transparent electrode coated with the composition for the transparent electrode has superior transmittance, electrical conductivity and transparency.
    Type: Application
    Filed: August 20, 2013
    Publication date: October 15, 2015
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
  • Publication number: 20140308524
    Abstract: The present invention provides a stacked transparent electrode in which a coating layer (B) comprising carbon nanotubes and a coating layer (C) comprising metal nanowires are stacked on a base substrate (A) in a plurality of levels, wherein the stacked structure is composed of the coating layer (B) comprising carbon nanotubes and the coating layer (C) comprising metal nanowires stacked in an alternate manner, further the present invention can maximize the conductivity of the metal nanowire by coating the transparent substrate using the carbon nanotubes and the metal nanowires, and can secure efficiency and stability of the transparent electrode by preventing oxidation of the metal nanowires and maintaining a stable coating surface when coupled with the carbon nanotubes.
    Type: Application
    Filed: April 24, 2012
    Publication date: October 16, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
  • Publication number: 20140238736
    Abstract: A thermoplastic resin composition that can have excellent EMI shielding and injection-molding processability includes (A) a thermoplastic resin, (B) carbon fibers, and (C) filler comprising nano metal particles surface coated with graphite crystalline nano carbon particles, composite fillers which are carbon nanotubes coated with nano metal particles, composite fillers which are carbon nanotubes supporting nano metal particles, and combinations thereof.
    Type: Application
    Filed: February 17, 2014
    Publication date: August 28, 2014
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kyoung Tae Youm, Jee Kwon Park, Young Sil Lee
  • Publication number: 20140193323
    Abstract: The present invention relates to a method for manufacturing carbon nanotubes comprising: a preparatory step of a supported catalyst; a temperature-raising step of inserting the supported catalyst into a reactor, injecting hydrocarbon gas and hydrogen gas at the same time, and raising the temperature of the reactor to between 900 to 1000° C. to synthesize carbon nanotubes; and a temperature-lowering step of lowering the temperature of the reactor to between a room temperature to 200° C., injecting only hydrogen gas, and synthesizing carbon nanotubes. The carbon nanotubes manufactured by the above method have high purity, and excellent selectivity for double wall carbon nanotubes can be achieved.
    Type: Application
    Filed: November 2, 2012
    Publication date: July 10, 2014
    Inventors: Kyoung Tae Youm, Byeong Yeol Kim, Young Sil Lee, Bo Kyung Lim
  • Patent number: 8222321
    Abstract: The present invention provides a thermoplastic resin composition comprising (A) a thermoplastic resin, and (B) a carbon nanofiber-metal composite including a plurality of laminated truncated, conic graphenes continuously coated with a metal. The thermoplastic resin composition according to the present invention can have excellent EMI shielding properties.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: July 17, 2012
    Assignee: Cheil Industries Inc.
    Inventors: Kyoung Tae Youm, Young Sik Ryu, Young Sil Lee
  • Publication number: 20110160037
    Abstract: The present invention provides a carbon nanofiber-metal composite, which is formed by continuously coating a carbon nanofiber including a plurality of laminated truncated, conic graphenes with a metal. The carbon nanofiber-metal composite according to the present invention can have improved magnetic permeability and conductivity, and thus can be useful as an electromagnetic shielding material.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 30, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kyoung Tae Youm, Young Sil Lee
  • Publication number: 20110160372
    Abstract: The present invention provides a thermoplastic resin composition comprising (A) a thermoplastic resin, and (B) a carbon nanofiber-metal composite including a plurality of laminated truncated, conic graphenes continuously coated with a metal. The thermoplastic resin composition according to the present invention can have excellent EMI shielding properties.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 30, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kyoung Tae Youm, Young Sik Ryu, Young Sil Lee