Patents by Inventor Hye Kyung Han

Hye Kyung Han 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).

  • Alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound copolymer with improved low-temperature impact strength and polycarbonate composition comprising the same
    Patent number: 9790308
    Abstract: Disclosed are an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound copolymer which is prepared using a polyalkylene cross-linking agent such as polyethylene glycol diacrylate or polyethylene glycol dimethacrylate for a core of the alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound copolymer and thus advantageously improves low-temperature impact strength of resins when the copolymer is applied to a polycarbonate resin composition, and the polycarbonate resin composition comprising the copolymer.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: October 17, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Hye Kyung Han, Yong Yeon Hwang, Min Jung Kim, Chun Ho Park, Sang Mi Lee
  • ALKYL ACRYLATE-AROMATIC VINYL COMPOUND-VINYL CYANIDE COMPOUND COPOLYMER WITH IMPROVED LOW-TEMPERATURE IMPACT STRENGTH AND POLYCARBONATE COMPOSITION COMPRISING THE SAME
    Publication number: 20160304651
    Abstract: Disclosed are an alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound copolymer which is prepared using a polyalkylene cross-linking agent such as polyethylene glycol diacrylate or polyethylene glycol dimethacrylate for a core of the alkyl acrylate-aromatic vinyl compound-vinyl cyanide compound copolymer and thus advantageously improves low-temperature impact strength of resins when the copolymer is applied to a polycarbonate resin composition, and the polycarbonate resin composition comprising the copolymer.
    Type: Application
    Filed: September 24, 2013
    Publication date: October 20, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Hye Kyung HAN, Yong Yeon HWANG, Min Jung KIM, Chun Ho PARK, Sang Mi LEE
  • ASA graft copolymer composition
    Patent number: 9428644
    Abstract: Disclosed are an ASA graft copolymer having a structure including a seed which comprises at least one compound of an aromatic vinyl compound, a vinyl cyan compound and an alkyl (meth)acrylate compound, a core which surrounds the seed and comprises alkyl acrylate, and a shell which surrounds the core, comprises an aromatic vinyl compound, a vinyl cyan compound and a crosslinking agent, and having suitably controlled thicknesses and refractive indexes of the respective layers, and an ASA graft copolymer composition comprising the ASA graft copolymer.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: August 30, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Min Jung Kim, Yong Yeon Hwang, Chun Ho Park, Hye Kyung Han, Sang Mi Lee
  • Acrylonitrile-acrylate-styrene graft copolymer and thermoplastic resin composition comprising thereof
    Patent number: 9353255
    Abstract: Disclosed are an acrylonitrile-acrylate-styrene graft copolymer having a structure including a seed which comprises at least one of an aromatic vinyl compound, a vinyl cyanide compound and an alkyl (meth)acrylate compound, a core which surrounds the seed and comprises alkyl acrylate, and a shell which surrounds the core and comprises at least one of an aromatic vinyl compound, a vinyl cyanide compound and an alkyl (meth)acrylate compound, and having suitably controlled thicknesses and refractive indexes of the respective layers, and a thermoplastic resin composition comprising the acrylonitrile-acrylate-styrene graft copolymer.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 31, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Min Jung Kim, Yong Yeon Hwang, Chun Ho Park, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang, Hye Kyung Han
  • ACRYLONITRILE-ACRYLATE-STYRENE GRAFT COPOLYMER AND THERMOPLASTIC RESIN COMPOSITION COMPRISING THEREOF
    Publication number: 20140235749
    Abstract: Disclosed are an acrylonitrile-acrylate-styrene graft copolymer having a structure including a seed which comprises at least one of an aromatic vinyl compound, a vinyl cyanide compound and an alkyl(meth)acrylate compound, a core which surrounds the seed and comprises alkyl acrylate, and a shell which surrounds the core and comprises at least one of an aromatic vinyl compound, a vinyl cyanide compound and an alkyl(meth)acrylate compound, and having suitably controlled thicknesses and refractive indexes of the respective layers, and a thermoplastic resin composition comprising the acrylonitrile-acrylate-styrene graft copolymer.
    Type: Application
    Filed: July 16, 2013
    Publication date: August 21, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Min Jung Kim, Yong Yeon Hwang, Chun Ho Park, Sang Mi Lee, Yeong Min Lee, Eun Soo Kang, Hye Kyung Han
  • ASA GRAFT COPOLYMER COMPOSITION
    Publication number: 20140107276
    Abstract: Disclosed are an ASA graft copolymer having a structure including a seed which comprises at least one compound of an aromatic vinyl compound, a vinyl cyan compound and an alkyl (meth)acrylate compound, a core which surrounds the seed and comprises alkyl acrylate, and a shell which surrounds the core, comprises an aromatic vinyl compound, a vinyl cyan compound and a crosslinking agent, and having suitably controlled thicknesses and refractive indexes of the respective layers, and an ASA graft copolymer composition comprising the ASA graft copolymer.
    Type: Application
    Filed: February 1, 2013
    Publication date: April 17, 2014
    Inventors: Min Jung Kim, Yong Yeon Hwang, Chun Ho Park, Hye Kyung Han, Sang Mi Lee