Patents by Inventor Min Joung Im

Min Joung Im 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).

  • Optical film
    Patent number: 9382334
    Abstract: Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: July 5, 2016
    Assignee: SK Innovation Co., Ltd.
    Inventors: Myoung Lae Kim, Hyuk Jun Kim, Won Yeob Kim, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Optical Film
    Publication number: 20150068427
    Abstract: Provided is an optical film used for the optical compensation, in which additives are added to thereby have a good stability at high temperature and high humidity, a higher chromaticity, a higher Haze and a higher moisture resistance, as well as a small thickness direction retardation (Rth).
    Type: Application
    Filed: May 7, 2013
    Publication date: March 12, 2015
    Inventors: Won Yeob Kim, Myoung Lae Kim, Hyuk Jun Kim, Yong Gyun Cho, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Optical Film
    Publication number: 20150004333
    Abstract: Provided are an optical film using a cellulose derivative, useful in an image display device, such as a liquid crystal display or the like, a retardation film and a polarization film using the optical film, and a liquid crystal display having excellent view angle characteristics by using these films, while the optical film uses a cellulose derivative resin in which some hydrogen atoms of hydroxy groups of cellulose are substituted with three or more kinds of substituents.
    Type: Application
    Filed: January 4, 2013
    Publication date: January 1, 2015
    Inventors: Myoung Lae Kim, Hyuk Jun Kim, Won Yeob Kim, Min Joung Im, Yeong Min Jo, Seung Eon Lee, Hyo Shin Kwak
  • Cellulose Acylate Film
    Publication number: 20140311381
    Abstract: Provided is a cellulose acylate film for an optical film usable for optical compensation sheet, an optical filter for stereoscopic images, a polarizer and a liquid crystal display and the like.
    Type: Application
    Filed: March 7, 2014
    Publication date: October 23, 2014
    Applicant: SK Innovation Co., Ltd.
    Inventors: Hyo Shin Kwak, Min Joung Im, Seung Eon Lee, Tae Sug Jang, Myoung Lae Kim, Yong Gyun Cho, Won Yeob Kim, Min Sang Park
  • Optical Film
    Publication number: 20140116292
    Abstract: The present invention relates to a cellulose acetate film used for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).
    Type: Application
    Filed: June 20, 2012
    Publication date: May 1, 2014
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Won Yeob Kim, Min Joung Im, Seung Eon Lee, Myoung Lae Kim, Yong Gyun Cho, Sang Yeup Lee, Ki Yup Kim
  • Optical Film
    Publication number: 20140116293
    Abstract: The present invention relates to a cellulose acetate film for optical compensation and a retardation enhancer used therein, and relates to a cellulose acetate film which has a high retardation value in the thickness direction (Rth).
    Type: Application
    Filed: June 20, 2012
    Publication date: May 1, 2014
    Applicant: SK INNOVATION CO., LTD.
    Inventors: Won Yeob Kim, Min Joung Im, Seung Eon Lee, Hyo Shin Kwak, Myoung Lae Kim, Yong Gyun Cho