Patents by Inventor Yun Seok BAE

Yun Seok BAE 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: 20230303838
    Abstract: The present invention relates to a thermoplastic resin composition and a molded product using same, the thermoplastic resin composition comprising (F) 0.2-3 parts by weight of a polyamide-based flow enhancer on the basis of 100 parts by weight of a basic composition, which comprises: (A) 40-60 wt % of a polyamide resin; (B) 15-30 wt % of an acrylonitrile-butadiene-styrene copolymer resin having a rubber polymer average diameter of 1,000-5,000 nm; (C) 5-10 wt % of an ethylene-based copolymer containing an acid anhydride group; (D) 2-8 wt % of a maleimide-based copolymer; and (E) 10-30 wt % of a carbon fiber.
    Type: Application
    Filed: August 24, 2021
    Publication date: September 28, 2023
    Inventors: Yun Seok BAE, Hyun Je LEE, Kyun Ha BAN, Young Sub JIN
  • Patent number: 11674243
    Abstract: A woven article for a carbon fiber reinforced plastic according to the present invention is a woven article of a spun yarn containing: about 10 wt % to about 60 wt % of a carbon fiber staple in which the content of carbon components is equal to or greater than about 97 wt %; and about 40 wt % to about 90 wt % of a thermoplastic resin fiber, wherein the carbon fiber staple is obtained by carbonizing carbon fiber reinforced plastic scrap at a temperature of about 900 to about 1400° C. The woven article for a carbon fiber reinforced plastic includes a carbon fiber staple manufactured from scrap generated during manufacture of the carbon fiber reinforced plastic, and allows economic recycling of the carbon fiber reinforced plastic scrap without a reduction in mechanical properties. When molded, productivity is high due to a short cycle time, there is almost no orientation, and an excellent flexural modulus is exhibited.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 13, 2023
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Kyun Ha Ban, Yun Seok Bae, Chang Min Hong
  • Patent number: 11535722
    Abstract: The present invention relates to a method for producing foam and foam produced thereby. The method for producing foam includes a step for producing foam by kneading and injection molding a first extrusion product and a second extrusion product, wherein the first extrusion product is obtained by extruding a first composition including an aromatic vinyl-based resin, and the second extrusion product is obtained by extruding a second composition including a polyamide resin and a foaming agent.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: December 27, 2022
    Assignee: Lotte Chemical Corporation
    Inventors: Kyun Ha Ban, Won Ko, Yun Seok Bae, Kee Hae Kwon
  • Patent number: 10995208
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a thermoplastic resin including a repeat unit represented by Chemical Formula 1, a repeat unit represented by Chemical Formula 2, and a repeat unit represented by Chemical Formula 3; and approximately 5 to 40 parts by weight of a reinforcing filler. The thermoplastic resin composition is excellent in terms of heat resistance, stiffness, lightweight properties, and external appearance, and exhibits excellent balance between said physical properties.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 4, 2021
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yun Seok Bae, Kyun Ha Ban, Chang Min Hong
  • Patent number: 10793710
    Abstract: A thermoplastic resin composition of the present invention contains: a first aromatic vinyl-based resin, which is a copolymer of an aromatic vinyl-based monomer and a maleic acid anhydride; a second aromatic vinyl-based resin, which is a copolymer of an aromatic vinyl-based monomer, a maleic acid anhydride, and a maleimide-based monomer represented by chemical formula 1; a rubber-modified vinyl-based graft copolymer; and a reinforcing filler. The thermoplastic resin composition is excellent in view of heat resistance, rigidity, dimensional stability, and the like.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: October 6, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yun Seok Bae, Kyun Ha Ban, Chang Min Hong
  • Publication number: 20200308361
    Abstract: The present invention relates to a method for producing foam and foam produced thereby. The method for producing foam includes a step for producing foam by kneading and injection molding a first extrusion product and a second extrusion product, wherein the first extrusion product is obtained by extruding a first composition including an aromatic vinyl-based resin, and the second extrusion product is obtained by extruding a second composition including a polyamide resin and a foaming agent.
    Type: Application
    Filed: October 10, 2018
    Publication date: October 1, 2020
    Inventors: Kyun Ha BAN, Won KO, Yun Seok BAE, Kee Hae KWON
  • Patent number: 10584219
    Abstract: A composite is prepared through extrusion by supplying a thermoplastic resin to a main feeder, followed by supplying a plurality of carbon fiber groups to a side feeder, wherein the carbon fiber groups include a plurality of carbon fiber single yarns having a length of about 6 cm to about 8 cm and unidirectionally aligned.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: March 10, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Yun Seok Bae, Kyun Ha Ban, Kee Hae Kwon
  • Patent number: 10577729
    Abstract: Disclosed herein is spun yarn and a method of preparing the same. The spun yarn includes carbon staple fibers including about 97 wt % or more of carbon, and thermoplastic resin fibers. The spun yarn includes carbon staple fibers prepared from scrap generated during manufacture of carbon fiber-reinforced plastic products, and can have good mechanical properties and conductivity.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: March 3, 2020
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Kyun Ha Ban, Yun Seok Bae, Chang Min Hong
  • Publication number: 20190264353
    Abstract: A woven article for a carbon fiber reinforced plastic according to the present invention is a woven article of a spun yarn containing: about 10 wt % to about 60 wt % of a carbon fiber staple in which the content of carbon components is equal to or greater than about 97 wt %; and about 40 wt % to about 90 wt % of a thermoplastic resin fiber, wherein the carbon fiber staple is obtained by carbonizing carbon fiber reinforced plastic scrap at a temperature of about 900 to about 1400° C. The woven article for a carbon fiber reinforced plastic includes a carbon fiber staple manufactured from scrap generated during manufacture of the carbon fiber reinforced plastic, and allows economic recycling of the carbon fiber reinforced plastic scrap without a reduction in mechanical properties. When molded, productivity is high due to a short cycle time, there is almost no orientation, and an excellent flexural modulus is exhibited.
    Type: Application
    Filed: October 30, 2017
    Publication date: August 29, 2019
    Inventors: Kyun Ha BAN, Yun Seok BAE, Chang Min HONG
  • Publication number: 20190248994
    Abstract: A thermoplastic resin composition of the present invention comprises: approximately 100 parts by weight of a thermoplastic resin including a repeat unit represented by Chemical Formula 1, a repeat unit represented by Chemical Formula 2, and a repeat unit represented by Chemical Formula 3; and approximately 5 to 40 parts by weight of a reinforcing filler. The thermoplastic resin composition is excellent in terms of heat resistance, stiffness, lightweight properties, and external appearance, and exhibits excellent balance between said physical properties.
    Type: Application
    Filed: October 30, 2017
    Publication date: August 15, 2019
    Inventors: Yun Seok BAE, Kyun Ha BAN, Chang Min HONG
  • Publication number: 20180237630
    Abstract: A thermoplastic resin composition of the present invention contains: a first aromatic vinyl-based resin, which is a copolymer of an aromatic vinyl-based monomer and a maleic acid anhydride; a second aromatic vinyl-based resin, which is a copolymer of an aromatic vinyl-based monomer, a maleic acid anhydride, and a maleimide-based monomer represented by chemical formula 1; a rubber-modified vinyl-based graft copolymer; and a reinforcing filler. The thermoplastic resin composition is excellent in view of heat resistance, rigidity, dimensional stability, and the like.
    Type: Application
    Filed: September 29, 2016
    Publication date: August 23, 2018
    Inventors: Yun Seok BAE, Kyun Ha BAN, Chang Min HONG
  • Publication number: 20180179347
    Abstract: A composite is prepared through extrusion by supplying a thermoplastic resin to a main feeder, followed by supplying a plurality of carbon fiber groups to a side feeder, wherein the carbon fiber groups include a plurality of carbon fiber single yarns having a length of about 6 cm to about 8 cm and unidirectionally aligned.
    Type: Application
    Filed: December 26, 2017
    Publication date: June 28, 2018
    Inventors: Yun Seok BAE, Kyun Ha BAN, Kee Hae KWON
  • Publication number: 20180057970
    Abstract: Disclosed herein is spun yarn and a method of preparing the same. The spun yarn includes carbon staple fibers including about 97 wt % or more of carbon, and thermoplastic resin fibers. The spun yarn includes carbon staple fibers prepared from scrap generated during manufacture of carbon fiber-reinforced plastic products, and can have good mechanical properties and conductivity.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Inventors: Kyun Ha BAN, Yun Seok BAE, Chang Min HONG