Patents by Inventor Sung Tae Ahn

Sung Tae Ahn 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: 10294365
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more specifically, to a polycarbonate-based resin composition exhibiting improved impact strength (impact resistance) and chemical resistance while including a glass fiber in a relatively small content, and a molded article formed therefrom.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: May 21, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Su Kyoung Lee, Min Ji Kim, Jong Hyun Lee, Ryul Lee, Sung Tae Ahn
  • Patent number: 10240037
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more particularly, to a polycarbonate-based resin composition exhibiting low deformation characteristic, excellent impact strength, excellent appearance surface characteristic, and excellent flame retardancy, and a molded article formed therefrom.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 26, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jong Hyun Lee, Su Kyoung Lee, Min Ji Kim, Ryul Lee, Sung Tae Ahn
  • Patent number: 10100196
    Abstract: Disclosed are a polycarbonate resin composition including 15 to 93% by weight of a polycarbonate-polyorganosiloxane copolymer; 0 to 70% by weight of a bisphenol-derived polycarbonate resin; 5 to 30% by weight of glass fiber surface-treated with epoxysilane; d) 1 to 5% by weight of a core-shell impact modifier; and e) 0.05 to 3% by weight of an epoxysilane additive and a polycarbonate resin composition, and a molded article manufactured therefrom. In accordance with the present disclosure, a polycarbonate resin composition and a molded article manufactured therefrom, and more particularly to a polycarbonate resin composition suitable for satisfying demand for larger area and slimmer electronic products, etc. while providing superior rigidity, chemical resistance, and impact resistance and aesthetic appearance, and a molded article manufactured therefrom are provided.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: October 16, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Su Kyoung Lee, Min Ji Kim, Jong Hyun Lee, Ryul Lee, Sung Tae Ahn
  • Patent number: 10081730
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more specifically, to a polycarbonate-based resin composition exhibiting high fluidity and excellent chemical resistance and impact resistance, and a molded article formed therefrom.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: September 25, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Ryul Lee, Su Kyoung Lee, Min Ji Kim, Jong Hyun Lee, Sung Tae Ahn
  • Patent number: 10072149
    Abstract: Disclosed is a poly(arylene ether) resin composition, and more specifically, a modified poly(arylene ether) resin composition including a poly(arylene ether) resin, a poly(arylene ether) resin modified with unsaturated carboxylic acid or an anhydride thereof, a polyamide resin, a polyolefin resin, and an encapsulating agent, wherein the polyolefin resin is encapsulated by the encapsulating agent with the poly(arylene ether) resin and the poly(arylene ether) resin modified with unsaturated carboxylic acid or an anhydride thereof, and a molded article produced therefrom. The disclosed composition has an effect of providing a modified poly(arylene ether) resin composition which has less change in physical properties caused by moisture, and has low specific gravity and superior impact strength, weatherability and balance in physical properties.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: September 11, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Nam Jib Park, Sang Ho Lee, Se Yeong Ju, Sung Ho Lee, Sung Tae Ahn
  • Patent number: 10047223
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more specifically, to a polycarbonate-based resin composition exhibiting high fluidity and excellent chemical resistance and impact resistance, and a molded article formed therefrom.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: August 14, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Ryul Lee, Su Kyoung Lee, Min Ji Kim, Jong Hyun Lee, Sung Tae Ahn
  • Publication number: 20170321014
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more specifically, to a polycarbonate-based resin composition exhibiting improved impact strength (impact resistance) and chemical resistance while including a glass fiber in a relatively small content, and a molded article formed therefrom.
    Type: Application
    Filed: December 3, 2015
    Publication date: November 9, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Su Kyoung LEE, Min Ji KIM, Jong Hyun LEE, Ryul LEE, Sung Tae AHN
  • Publication number: 20170313870
    Abstract: The present disclosure relates to a polycarbonate-ABS based alloy resin composition having superior plating adhesion and a molded article manufactured therefrom. In accordance with the present disclosure, a polycarbonate-ABS based alloy resin composition having superior plating adhesion as well as superior mechanical properties, and a molded article including the polycarbonate-ABS based alloy resin composition.
    Type: Application
    Filed: September 26, 2016
    Publication date: November 2, 2017
    Inventors: Jae Hwan KIM, Myeung II KIM, Seok Jae YOO, Sung Ho LEE, Sung Tae AHN, Min Ho JEONG
  • Publication number: 20170306146
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more specifically, to a polycarbonate-based resin composition exhibiting high fluidity and excellent chemical resistance and impact resistance, and a molded article formed therefrom.
    Type: Application
    Filed: December 3, 2015
    Publication date: October 26, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Ryul LEE, Su Kyoung LEE, Min Ji KIM, Jong Hyun LEE, Sung Tae AHN
  • Publication number: 20170298222
    Abstract: The present invention relates to a polycarbonate-based resin composition and a molded article thereof, and more particularly, to a polycarbonate-based resin composition exhibiting low deformation characteristic, excellent impact strength, excellent appearance surface characteristic, and excellent flame retardancy, and a molded article formed therefrom.
    Type: Application
    Filed: December 3, 2015
    Publication date: October 19, 2017
    Inventors: Jong Hyun LEE, Su Kyuong LEE, Min Ji KIM, Ryul LEE, Sung Tae AHN
  • Publication number: 20170204265
    Abstract: Disclosed are a polycarbonate resin composition including 15 to 93% by weight of a polycarbonate-polyorganosiloxane copolymer; 0 to 70% by weight of a bisphenol-derived polycarbonate resin; 5 to 30% by weight of glass fiber surface-treated with epoxysilane; d) 1 to 5% by weight of a core-shell impact modifier; and e) 0.05 to 3% by weight of an epoxysilane additive and a polycarbonate resin composition, and a molded article manufactured therefrom. In accordance with the present disclosure, a polycarbonate resin composition and a molded article manufactured therefrom, and more particularly to a polycarbonate resin composition suitable for satisfying demand for larger area and slimmer electronic products, etc. while providing superior rigidity, chemical resistance, and impact resistance and aesthetic appearance, and a molded article manufactured therefrom are provided.
    Type: Application
    Filed: January 11, 2017
    Publication date: July 20, 2017
    Inventors: Su Kyoung LEE, Min Ji KIM, Jong Hyun LEE, Ryul LEE, Sung Tae AHN
  • Publication number: 20170174884
    Abstract: Disclosed is a modified poly(arylene ether) resin composition and more specifically, are a modified poly(arylene ether) resin composition including a poly(arylene ether) resin, a poly(arylene ether) resin modified with unsaturated carboxylic acid or an anhydride thereof, a polyamide resin, a polyolefin resin, and an encapsulating agent, wherein the polyolefin resin is encapsulated by the encapsulating agent with the poly(arylene ether) resin and the poly(arylene ether) resin modified with unsaturated carboxylic acid or an anhydride thereof, and a molded article produced therefrom. The present invention has an effect of providing a modified poly(arylene ether) resin composition which has less change in physical properties caused by moisture, and has low specific gravity and superior impact strength, weatherability and balance in physical properties.
    Type: Application
    Filed: February 17, 2016
    Publication date: June 22, 2017
    Applicant: LG CHEM LTD.
    Inventors: Nam Jib PARK, Sang Ho LEE, Se Yeong JU, Sung Ho LEE, Sung Tae AHN
  • Patent number: 9580597
    Abstract: The present invention relates to a polycarbonate composition including a polycarbonate and an impact reinforcing agent, and an inorganic filler to improve a mechanical property thereof, and a copolycarbonate to solve a problem of appearance defect caused by including the inorganic filler.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: February 28, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Yoon Seon Jeong, Moo Seok Lee, Ryul Lee, Sung Tae Ahn, Ik Hwan Cho
  • Patent number: 9493649
    Abstract: A polycarbonate resin composition including 35 to 49% by weight of a polycarbonate resin; 41 to 55% by weight of a glass fiber having a rectangular or oval cross-sectional shape in the direction perpendicular to the longitudinal direction, in which its aspect ratio is 50 to 200; 1 to 10% by weight of an impact modifier having a core-shell structure; 1 to 10% by weight of an ethylene-(meth)acrylate-based copolymer; and 1 to 10% by weight of a rheology modifier containing a thermoplastic polyester-based polymer or a phosphate ester-based compound.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: November 15, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Ryul Lee, Su Kyoung Lee, Min Ji Kim, Jong Kuk Choi, Sung Tae Ahn
  • Publication number: 20160319127
    Abstract: The present invention relates to a polycarbonate composition including a polycarbonate and an impact reinforcing agent, and an inorganic filler to improve a mechanical property thereof, and a copolycarbonate to solve a problem of appearance defect caused by including the inorganic filler.
    Type: Application
    Filed: December 4, 2015
    Publication date: November 3, 2016
    Inventors: Yoon Seon JEONG, Moo Seok LEE, Ryul LEE, Sung Tae AHN, Ik Hwan CHO
  • Patent number: 9279052
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl-modified ethylene-octene copolymer resin, as a chain extension/hydrolysis resistance agent for blown and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance, melt viscosity and parison stability, and in particular, exhibits superior blow molding, causes no gelation, and reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, thereby making a balance between physical properties, molding property and operation environments.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 8, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Ho Dong Kim, Sang Wook Na, A Young Hur, Soo Min Lee, Sung Tae Ahn
  • Publication number: 20150267049
    Abstract: Disclosed are a thermoplastic polyester elastomer resin composition and a molded article comprising the same. More specifically, disclosed is a thermoplastic polyester elastomer resin composition which comprises a glycidyl-modified ethylene-octene copolymer resin, as a chain extension/hydrolysis resistance agent for blown and extrusion molding to improve melt viscosity, and increases a molecular weight through reaction extrusion and thus exhibits superior heat resistance, weather resistance, heat aging resistance, hydrolysis resistance, fatigue resistance, melt viscosity and parison stability, and in particular, exhibits superior blow molding, causes no gelation, and reduces production of odor-causing substances such as volatile organic compounds (TVOC) during blow molding, thereby making a balance between physical properties, molding property and operation environments.
    Type: Application
    Filed: June 18, 2014
    Publication date: September 24, 2015
    Inventors: Ho Dong Kim, Sang Wook Na, A Young Hur, Soo Min Lee, Sung Tae Ahn
  • Publication number: 20150218371
    Abstract: The present invention relates to a polycarbonate resin composition which has low warpage property and excellent flowability and appearance properties, and exhibits more improved toughness. The polycarbonate resin composition includes 35 to 60% by weight of a polycarbonate resin; 30 to 55% by weight of a glass fiber having a square or oval cross-sectional shape in the direction perpendicular to the longitudinal direction, in which its aspect ratio of the following Formula 1 is 50 to 200; 1 to 10% by weight of an impact modifier having a core-shell structure; 1 to 10% by weight of an ethylene-(meth)acrylate-based copolymer; and 1 to 10% by weight of a rheology modifier containing a thermoplastic polyester-based polymer or a phosphate ester-based compound.
    Type: Application
    Filed: October 4, 2013
    Publication date: August 6, 2015
    Applicant: LG CHEM, LTD
    Inventors: Ryul Lee, Su Kyoung Lee, Min Ji Kim, Jong Kuk Choi, Sung Tae Ahn
  • Patent number: 9056978
    Abstract: A non-halogen flame retardant and high rigidity polycarbonate resin composition is disclosed. The non-halogen flame retardant and high rigidity polycarbonate resin composition has excellent flame retardancy and rigidity by overcoming a conventional problem such as poor rigidity occurred, upon adding a flame retardant agent in polycarbonate resin composition reinforced with a glass fiber having improved rigidity such as flexibility and surface smoothness etc., imposed by the use of the glass fiber. The polycarbonate resin composition has excellent fluidity, appearance surface quality and flexibility, together with high impact resistance and toughness, and also flame retardancy.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: June 16, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sun Mo Son, Ryul Lee, Sung Ho Lee, Sung Tae Ahn, Su Kyoung Lee, Jong Wan Kim
  • Patent number: 8829086
    Abstract: Disclosed is a glass fiber-reinforced polycarbonate flame-retardant resin composition which comprises (A) 50 to 75% by weight of polycarbonate having a melt index of 22 g/10 min or more (300° C., 1.2 kg), (B) 3 to 15% by weight of a rubber-modified styrene-based graft copolymer, (C) 3 to 10% by weight of a bulk copolymer of an aromatic vinyl compound and a vinyl cyan compound, (D) 1 to 10% by weight of an ethylene acrylate-based copolymer, (E) 10 to 25% by weight of glass fiber, and (F) 5 to 20% by weight of an aromatic phosphate ester-based compound, and thus advantageously exhibits superior flowability, flame retardancy, hardness, impact resistance and appearance qualities.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: September 9, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jong Kuk Choi, Yong Kim, Myeung Il Kim, Dae Young Ok, Sung Tae Ahn