Patents by Inventor Jun-Guen Um

Jun-Guen Um 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).

  • RESIN COMPOSITION FOR OPTICAL FILM AND COMPENSATION FILM USING THE SAME
    Publication number: 20140071530
    Abstract: Provided are a composition for an optical film comprising 40 wt % to 94 wt % of an acrylic resin; 5 wt % to 40 wt % of a styrene-acrylonitrile copolymer having a weight-average molecular weight less than 1,000,000; and 1 wt % to 20 wt % of an ultra-high molecular weight styrene-acrylonitrile copolymer having a weight-average molecular weight ranging from 1,000,000 to 9,000,000, and an optical film using the composition.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 13, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Jun-Wuk Park, Sang-Min Kwak, Jun-Guen Um, Nam-Jeong Lee, Suk-Il Youn