Patents by Inventor Ho CHul Yoon

Ho CHul Yoon 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).

  • Publication number: 20200257023
    Abstract: Provided is a hard coating film. The hard coating film includes a base layer and a hard coating layer disposed on the base layer and having a pencil hardness of 4H or higher. A surface elongation at break of the hard coating film falls within a predetermined range, as measured by a certain method. The hard coating film shows excellent durability under high-temperature/high-humidity conditions, has no microcracks formed after repeated folding, and shows excellent pencil hardness.
    Type: Application
    Filed: February 10, 2020
    Publication date: August 13, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Keon Hyeok Ko, Ho Chul Yoon
  • Publication number: 20200174161
    Abstract: Provided is a hard coating film including a polyamideimide substrate layer and a hard coating layer, each of which has a predetermined refractive index, with a difference in the refractive index between those layers being 0.05. The substrate layer has a tensile modulus of 3 to 7 GPa, at a thickness of 80 ?m, as measured according to ASTM D111. The present invention relates to a hard coating film having improved mechanical and optical properties.
    Type: Application
    Filed: December 2, 2019
    Publication date: June 4, 2020
    Inventors: Jong Nam Ahn, Keon Hyeok Ko, Byoung Sun Ko, Sang Yoon Park, Jin Su Park, Ho Chul Yoon, Tae Sug Jang
  • Publication number: 20200064518
    Abstract: Provided is a hard coating film in which a hard coating layer having a water contact angle of 90° or less, a high refractive index layer, and a low refractive index layer are laminated on a substrate, the film having suppressed curling, and excellent hardness and antireflection performance.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Publication number: 20200064519
    Abstract: Provided is a hard coating film in which a hard coating layer having a water contact angle of 90° or less, a conductive layer, and a low refractive index layer are laminated on a substrate, the film having excellent hardness, anti-curling property, antireflection performance, antifouling performance, and antistatic performance.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Tae Sug Jang, Byoung Sun Ko, Jin Su Park, Ho Chul Yoon
  • Publication number: 20200062991
    Abstract: Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by a specific chemical formula, a photoinitiator, a fluorine-substituted (meth)acrylate compound, and silica nanoparticles surface-modified with a fluorine compound, and forms a hard coating layer having excellent hardness and antifouling property and suppressing curling.
    Type: Application
    Filed: August 12, 2019
    Publication date: February 27, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Ho Chul Yoon
  • Publication number: 20200056056
    Abstract: Provided is an antifouling hard coating film including a cured layer of a composition for forming a hard coating layer including an epoxy siloxane resin, disposed on a substrate, and an antifouling layer including a fluorine-substituted silsesquioxane resin, disposed on the cured layer, the antifouling hard coating film having excellent interlayer bonding force, hardness, and antifouling property, and suppressed curling.
    Type: Application
    Filed: August 13, 2019
    Publication date: February 20, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Jin Su Park, Tae Sug Jang, Ho Chul Yoon
  • Publication number: 20200048462
    Abstract: Provided is a composition for forming a hard coating layer, which includes an epoxy siloxane resin, a crosslinking agent including a compound having an alicyclic epoxy group, a thermal initiator including a compound represented by Chemical Formula 2, and a photoinitiator to decrease curls and increase hardness of the hard coating film.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 13, 2020
    Inventors: Jong Nam Ahn, Byoung Sun Ko, Tae Sug Jang, Jin Su Park, Ho Chul Yoon
  • Publication number: 20180346760
    Abstract: A composition for forming a hard coating layer includes an epoxy siloxane resin having a weight average molecular weight in the range of 2,000 to 15,000 and a polydispersity index (PDI) in the range of 2.0 to 4.0, and thus may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that bending deformation is minimized.
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Inventors: Won-Yeob KIM, Hye-Jin KIM, Ho-Chul YOON, Young-June PARK
  • Patent number: 9676960
    Abstract: The present invention relates to a composition for forming a hard coating layer, which may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that curling is minimized.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: June 13, 2017
    Assignee: SK INNOVATION CO., LTD.
    Inventors: Won-Yeob Kim, Chul-Soon Moon, Hye-Jin Kim, Ho-Chul Yoon, Jae-Eun Lee, Jong-Nam Ahn, Youngjune Park
  • Publication number: 20160046830
    Abstract: The present invention relates to a composition for forming a hard coating layer, which may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that curling is minimized.
    Type: Application
    Filed: August 12, 2015
    Publication date: February 18, 2016
    Inventors: Won-Yeob KIM, Chul-Soon MOON, Hye-Jin KIM, Ho-Chul YOON, Jae-Eun LEE, Jong-Nam AHN, Young-June PARK
  • Publication number: 20160024348
    Abstract: A composition for forming a hard coating layer includes an epoxy siloxane resin having a weight average molecular weight in the range of 2,000 to 15,000 and a polydispersity index (PDI) in the range of 2.0 to 4.0, and thus may form a hard coating layer having significantly improved hardness as well as excellent flexibility such that bending deformation is minimized.
    Type: Application
    Filed: July 27, 2015
    Publication date: January 28, 2016
    Inventors: Won-Yeob KIM, Hye-Jin KIM, Ho-Chul YOON, Young-June PARK
  • Patent number: 8101716
    Abstract: The present invention relates to a human interferon-beta mutein. In particular, the present invention relates to the human interferon-beta mutein having one or two additional sugar chains compared to natural human interferon-beta.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: January 24, 2012
    Inventors: Young Kee Shin, Moon Kyoung So, Jong Min Lee, Ji-Hye Yang, Ji Uk Yoo, Tae Ho Byun, Ji Tai Kim, Han Kyu Oh, Ho CHul Yoon, Ji Soo Ahn, Kyung Song, Jae Ho Jin
  • Publication number: 20100003721
    Abstract: The present invention relates to a human interferon-beta mutein. In particular, the present invention relates to the human interferon-beta mutein having one or two additional sugar chains compared to natural human interferon-beta.
    Type: Application
    Filed: November 2, 2005
    Publication date: January 7, 2010
    Inventors: Young Kee Shin, Moon Kyoung So, Jong Min Lee, Ji-Hye Yang, Ji Uk Yoo, Tae Ho Byun, Ji Tai Kim, Han Kyu Oh, Ho Chul Yoon, Ji Soo Ahn, Kyung Song, Jae Ho Jin