Patents by Inventor SANG EOB NA

SANG EOB NA 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).

  • Dope solution for preparing optical film and optical film using the same
    Patent number: 11421060
    Abstract: Provided are a dope solution for preparing a polarizing plate protective film by a solution casting method using an acrylic polymer with high thermal resistance and high molecular weight, and a polarizing plate protective film using the same. The polarizing plate protective film using the dope solution according to the present invention has excellent optical properties, high tensile strength, low hygroscopic properties, and high thermal resistance, and thus, has the effects of excellent dimensional stability, and excellent adhesion with a polyvinyl alcohol film.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 23, 2022
    Assignee: LG MMA CORP.
    Inventors: Sung Il Park, Seong Jang Jeon, Sang Seok Park, Eun Jin Jeon, Sang Eob Na
  • DOPE SOLUTION FOR PREPARING OPTICAL FILM AND OPTICAL FILM USING THE SAME
    Publication number: 20190218322
    Abstract: Provided are a dope solution for preparing a polarizing plate protective film by a solution casting method using an acrylic polymer with high thermal resistance and high molecular weight, and a polarizing plate protective film using the same. The polarizing plate protective film using the dope solution according to the present invention has excellent optical properties, high tensile strength, low hygroscopic properties, and high thermal resistance, and thus, has the effects of excellent dimensional stability, and excellent adhesion with a polyvinyl alcohol film.
    Type: Application
    Filed: March 26, 2019
    Publication date: July 18, 2019
    Inventors: SUNG IL PARK, SEONG JANG JEON, SANG SEOK PARK, EUN JIN JEON, SANG EOB NA