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).
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Patent number: 11655335Abstract: 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: GrantFiled: December 31, 2018Date of Patent: May 23, 2023Assignee: Lotte Chemical CorporationInventors: Yeong Deuk Seo, Kyoung Tae Youm, Sang Hwa Lee, Sang Hyun Hong
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Patent number: 11565513Abstract: 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: GrantFiled: December 28, 2018Date of Patent: January 31, 2023Assignee: Lotte Chemical CorporationInventors: Sang Hwa Lee, Yeong Deuk Seo, Kyoung Tae Youm, Sang Hyun Hong
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Patent number: 11524492Abstract: 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: GrantFiled: December 28, 2018Date of Patent: December 13, 2022Assignee: Lotte Chemical CorporationInventors: Sang Hwa Lee, Yeong Deuk Seo, Kyoung Tae Youm, Sang Hyun Hong
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Patent number: 11091634Abstract: 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: GrantFiled: December 29, 2017Date of Patent: August 17, 2021Assignee: Lotte Advanced Materials Co., Ltd.Inventors: Kyoung Tae Youm, Yeong Deuk Seo, Sang Hyun Hong
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Publication number: 20210070935Abstract: 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: ApplicationFiled: December 31, 2018Publication date: March 11, 2021Inventors: Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hwa LEE, Sang Hyun HONG
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Publication number: 20210070997Abstract: 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: ApplicationFiled: December 28, 2018Publication date: March 11, 2021Inventors: Sang Hwa LEE, Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hyun HONG
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Patent number: 10676609Abstract: 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: GrantFiled: December 27, 2017Date of Patent: June 9, 2020Assignee: Lotte Advanced Materials Co., Ltd.Inventors: Kyoung Tae Youm, Nam Hyun Kim, Sang Hyun Hong
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Publication number: 20200123378Abstract: 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: ApplicationFiled: December 29, 2017Publication date: April 23, 2020Inventors: Kyoung Tae YOUM, Yeong Deuk SEO, Sang Hyun HONG
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Publication number: 20190203046Abstract: 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: ApplicationFiled: December 28, 2018Publication date: July 4, 2019Inventors: Sang Hwa LEE, Yeong Deuk SEO, Kyoung Tae YOUM, Sang Hyun HONG
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Publication number: 20180186997Abstract: 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: ApplicationFiled: December 27, 2017Publication date: July 5, 2018Inventors: Kyoung Tae YOUM, Nam Hyun KIM, Sang Hyun HONG
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Patent number: 9842668Abstract: 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: GrantFiled: August 20, 2013Date of Patent: December 12, 2017Assignee: Samsung SDI Co., Ltd.Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
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Publication number: 20150294751Abstract: 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: ApplicationFiled: August 20, 2013Publication date: October 15, 2015Applicant: SAMSUNG SDI CO., LTD.Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
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Publication number: 20140308524Abstract: 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: ApplicationFiled: April 24, 2012Publication date: October 16, 2014Applicant: Cheil Industries Inc.Inventors: Dae Seob Shim, Young Sil Lee, Kyoung Tae Youm
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Publication number: 20140238736Abstract: 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: ApplicationFiled: February 17, 2014Publication date: August 28, 2014Applicant: CHEIL INDUSTRIES INC.Inventors: Kyoung Tae Youm, Jee Kwon Park, Young Sil Lee
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Publication number: 20140193323Abstract: 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: ApplicationFiled: November 2, 2012Publication date: July 10, 2014Inventors: Kyoung Tae Youm, Byeong Yeol Kim, Young Sil Lee, Bo Kyung Lim
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Patent number: 8222321Abstract: 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: GrantFiled: December 15, 2010Date of Patent: July 17, 2012Assignee: Cheil Industries Inc.Inventors: Kyoung Tae Youm, Young Sik Ryu, Young Sil Lee
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Publication number: 20110160037Abstract: 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: ApplicationFiled: December 15, 2010Publication date: June 30, 2011Applicant: CHEIL INDUSTRIES INC.Inventors: Kyoung Tae Youm, Young Sil Lee
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Publication number: 20110160372Abstract: 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: ApplicationFiled: December 15, 2010Publication date: June 30, 2011Applicant: CHEIL INDUSTRIES INC.Inventors: Kyoung Tae Youm, Young Sik Ryu, Young Sil Lee