Patents by Inventor Se Hui Han

Se Hui 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).

  • Photocromic primer composition having high impact resistance and transparent material coated with the same
    Patent number: 7713450
    Abstract: Disclosed are a primer composition having photochromic property and impact resistance for coating transparent materials and a photochromic transparent material having a primer layer formed by coating and curing the primer composition. The primer composition for coating transparent materials comprises: a) 5-90 parts by weight of a polyurethane containing Brønsted salt; b) 5-50 parts by weight of a polyepoxy resin; and c) 140 parts by weight of a photochromic dye, based on 100 parts by weight of the total primer composition. The photochromic transparent material having a primer layer formed by coating and curing the primer composition shows excellent photochromic property and impact resistance.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: May 11, 2010
    Assignee: LG Chem. Ltd.
    Inventors: Sung Hyun Lim, Se Hui Han, Sung Hoon Jang
  • Photocromic Primer Composition Having High Impact Resistance and Transparent Material Coated With the Same
    Publication number: 20070275234
    Abstract: Disclosed are a primer composition having photochromic property and impact resistance for coating transparent materials and a photochromic transparent material having a primer layer formed by coating and curing the primer composition. The primer composition for coating transparent materials comprises: a) 5-90 parts by weight of a polyurethane containing Brønsted salt; b) 5-50 parts by weight of a polyepoxy resin; and c) 140 parts by weight of a photochromic dye, based on 100 parts by weight of the total primer composition. The photochromic transparent material having a primer layer formed by coating and curing the primer composition shows excellent photochromic property and impact resistance.
    Type: Application
    Filed: August 6, 2004
    Publication date: November 29, 2007
    Applicant: LG Chem, Ltd.
    Inventors: Sung-Hyun Lim, Se Hui Han, Sung Jang
  • Method for preparing photochromic film or plate
    Publication number: 20070054223
    Abstract: The present invention relates to a method of preparing a photochromic film or plate comprising forming an embossed portion on a part or the whole of a basic material to be coated, coating a photochromic substance on a part or the whole of the basic material on which the embossed portion is formed and forming a protective layer on the basic material on which the photochromic substance is coated, so as to protect the photochromic substance. According to the present invention, the photochromic substance is filled in each of unit embossed portions so that the photochromic substances filled in each of the unit embossed portions are isolated from each other, thereby prolonging the life of the photochromic substance.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 8, 2007
    Inventors: Tae-Sik Kang, Se-Hui Han, Young-Jun Hong