Patents by Inventor Yu-Taek Sung

Yu-Taek Sung 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).

  • SUPPORTED HYBRID CATALYST AND METHOD FOR PREPARING OLEFIN-BASED POLYMER USING THE SAME
    Publication number: 20160280813
    Abstract: The present invention relates to a supported hybrid catalyst and a method for preparing an olefin based polymer using the same. The supported hybrid catalyst according to the present invention can be used in the preparation of an olefin-based polymer, and the olefin-based polymer prepared using the supported hybrid catalyst has excellent processability and mechanical properties and thus can be effectively used for the application of films or the like.
    Type: Application
    Filed: September 7, 2015
    Publication date: September 29, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Heon Yong KWON, Eun Young SHIN, Ki Soo LEE, Dae Sik HONG, Se Young KIM, Sung Min LEE, Hyun Jee KWON, Yong Ho LEE, Yu Taek SUNG, Dong Hoon JEONG
  • Highly heat resistant and highly strong acrylic copolymer, a resin composition comprising the same and an optical film and an IPS mode liquid crystal display device comprising the same
    Patent number: 9090721
    Abstract: Provided is an acrylic copolymer comprising; an alkyl (meth)acrylate monomer; a monomer comprising a cyclic pendant structure; and a tert-butyl (meth)acrylate monomer and/or (meth)acrylamide monomer. Also provided is a resin composition comprising the same and an optical film and an IPS mode liquid crystal display device using the same.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: July 28, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Da-Eun Sung, Su-Kyung Kim, Byung-Il Kang, Chang-Hun Han, Dae-Woo Lee, Jae-Bum Seo, Eun-Jung Choi, Yu-Taek Sung
  • Acrylic copolymer with high heat resistance and high strength, and optical film comprising the same
    Patent number: 8765896
    Abstract: The present invention relates to an acrylic copolymer having high heat resistance and high strength, and an optical film comprising the same, and more particularly, to an acrylic copolymer for optical films in which alkyl (meth)acrylate monomers; (meth)acrylate monomers comprising aromatic rings and/or aliphatic rings; and (meth)acrylamide monomers are included and polymerized. An acrylic copolymer according to the present invention is excellent in heat resistance while maintaining transparency. Further, an optical film comprising a compound resin including the acrylic copolymer has superior transparency and heat resistance and is excellent in formability, adhesion, retardation properties, and durability.
    Type: Grant
    Filed: June 8, 2011
    Date of Patent: July 1, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Su-Kyung Kim, Da-Eun Sung, Chang-Hun Han, Byung-Il Kang, Jae-Bum Seo, Eun-Jung Choi, Byoung-Kue Chun, Yu-Taek Sung
  • RESIN COMPOSITION FOR OPTICAL FILM AND OPTICAL FILM USING THE SAME
    Publication number: 20140036363
    Abstract: Provided are a resin composition for an optical film including an alkyl(meth)acrylate unit, a benzyl(meth)acrylate unit, a (meth)acrylic acid unit, and a unit expressed by Chemical Formula I, an optical film, a polarizing plate, and an image display device using the resin composition.
    Type: Application
    Filed: January 30, 2012
    Publication date: February 6, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Jae-Bum Seo, Chang-Hun Han, Dae-Woo Lee, Jung-Tae Park, Eun-Jung Choi, Byoung-II Kang, Joon-Sik Kim, Su-Kyung Kim, Da-Eun Sung, Nam-Jeong Lee, Beom-Suk Kim, Yu-Taek Sung
  • HIGHLY HEAT RESISTANT AND HIGHLY STRONG ACRYLIC COPOLYMER, A RESIN COMPOSITION COMPRISING THE SAME AND AN OPTICAL FILM AND AN IPS MODE LIQUID CRYSTAL DISPLAY DEVICE COMPRISING THE SAME
    Publication number: 20130150546
    Abstract: Provided is an acrylic copolymer comprising; an alkyl (meth)acrylate monomer; a monomer comprising a cyclic pendant structure; and a tert-butyl (meth)acrylate monomer and/or (meth)acrylamide monomer. Also provided is a resin composition comprising the same and an optical film and an IPS mode liquid crystal display device using the same.
    Type: Application
    Filed: August 19, 2011
    Publication date: June 13, 2013
    Applicant: LG Chem ,Ltd.
    Inventors: Da-Eun Sung, Su-Kyung Kim, Byung-ll Kang, Chang-Hun Han, Dae-Woo Lee, Jae-Bum Seo, Eun-Jung Choi, Yu-Taek Sung
  • ACRYLIC COPOLYMER WITH HIGH HEAT RESISTANCE AND HIGH STRENGTH, AND OPTICAL FILM COMPRISING THE SAME
    Publication number: 20130144023
    Abstract: The present invention relates to an acrylic copolymer having high heat resistance and high strength, and an optical film comprising the same, and more particularly, to an acrylic copolymer for optical films in which alkyl (meth)acrylate monomers; (meth)acrylate monomers comprising aromatic rings and/or aliphatic rings; and (meth)acrylamide monomers are included and polymerized. An acrylic copolymer according to the present invention is excellent in heat resistance while maintaining transparency. Further, an optical film comprising a compound resin including the acrylic copolymer has superior transparency and heat resistance and is excellent in formability, adhesion, retardation properties, and durability.
    Type: Application
    Filed: June 8, 2011
    Publication date: June 6, 2013
    Applicant: LG CHEM, LTD
    Inventors: Su-Kyung Kim, Da-Eun Sung, Chang-Hun Han, Byung-Il Kang, Jae-Bum Seo, Eun-Jung Choi, Byoung-Kue Chun, Yu-Taek Sung