Patents by Inventor Yoo-Seong Hong

Yoo-Seong Hong 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).

  • Multi-layered acrylic retardation film and fabrication method thereof
    Patent number: 8865299
    Abstract: The present invention provides a retardation film that comprises a) a first acrylic resin layer; and b) a second acrylic resin layer that is layered on at least one side of a) the first acrylic resin layer and comprises an acrylic resin and 1 to 20 parts by weight of rubber component based on 100 parts by weight of the acrylic resin. The retardation film according to the present invention has excellent optical transparency, haze, brittleness, mechanical strength, heat resistance, durability, and the like.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 21, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Jeong-Min Choi, Yoo-Seong Hong, Min-Hee Lee, Sang-Min Kwak, Jun-Geun Um, Kyung-Sik Kim
  • RETARDATION FILM, FABRICATION METHOD THEREOF, AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME
    Publication number: 20110262663
    Abstract: The present invention relates to a retardation film, a method for manufacturing the same, and a liquid crystal display device comprising the same. More particularly, the present invention relates to a retardation film which comprises 1) an acryl copolymer that comprises an acryl monomer and an aromatic vinyl monomer; and 2) a rubber component, and the retardation film according to the present invention has excellent optical transparency, haze, brittleness, mechanical strength, heat resistance and durability.
    Type: Application
    Filed: January 22, 2009
    Publication date: October 27, 2011
    Inventors: Jeong-Min Choi, Yoo-Seong Hong, Min-Hee Lee, Sang-Min Kwak, Jun-Geun Um, Kyung-Sik Kim
  • MULTI-LAYERED ACRYLIC RETARDATION FILM AND FABRICATION METHOD THEREOF
    Publication number: 20110171441
    Abstract: The present invention provides a retardation film that comprises a) a first acrylic resin layer, and b) a second acrylic resin layer that is layered on at least one side of a) the first acrylic resin layer and comprises an acrylic resin and 1 to 20 parts by weight of rubber component based on 100 parts by weight of the acrylic resin. The retardation film according to the present invention has excellent optical transparency, haze, brittleness, mechanical strength, heat resistance, durability, and the like.
    Type: Application
    Filed: December 19, 2008
    Publication date: July 14, 2011
    Applicant: LG Chem, Ltd.
    Inventors: Jeong-Min Choi, Yoo-Seong Hong, Min-Hee Lee, Sang-Min Kwak, Jun-Geun Um, Kyung-Sik Kim