Patents by Inventor Joong Han KUM

Joong Han KUM 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).

  • Pressure sensitive adhesive composition and pressure sensitive adhesive pattern formed therfrom
    Patent number: 10336924
    Abstract: An pressure sensitive adhesive composition according to the present invention includes: an acrylic copolymer; a multifunctional acrylate-based compound; and a photoinitiator, in which the acrylic copolymer includes a repeating unit derived from an acrylate-based monomer having a Tg of ?20° C. or less and a repeating unit derived from an unsaturated carboxylic acid monomer, and the repeating unit derived from the unsaturated carboxylic acid monomer is included in an amount of 10 to 50 parts by weight based on the total 100 parts by weight of the acrylic copolymer.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: July 2, 2019
    Assignee: Dongwoo Fine-Chem Co., Ltd.
    Inventors: Joong Han Kum, Jeong Ho Yoo, Kyoung Moon Jung, Bong Jin Choi, Han Young Choi
  • Reflective light control film and display device for a car comprising the same
    Patent number: 10191329
    Abstract: A reflective light control film includes a transparent film having a plurality of protruded line patterns formed on one surface of the base film, each of the protruded line patterns including a first side having an inclination angle with respect to the one surface of the base film and a second side, and a light reflection layer provided on the first side. The reflective light control film has excellent visibility for the screen even if it is not provided with a separate shade, and the screen is prevented from being reflected on the windshield.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: January 29, 2019
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Bong Jin Choi, Gi Hwan Ahn, Joong Han Kum, Jeung Hoon On, Han Young Choi
  • PRESSURE SENSITIVE ADHESIVE COMPOSITION AND PRESSURE SENSITIVE ADHESIVE PATTERN FORMED THERFROM
    Publication number: 20180223138
    Abstract: An pressure sensitive adhesive composition according to the present invention includes: an acrylic copolymer; a multifunctional acrylate-based compound; and a photoinitiator, in which the acrylic copolymer includes a repeating unit derived from an acrylate-based monomer having a Tg of ?20° C. or less and a repeating unit derived from an unsaturated carboxylic acid monomer, and the repeating unit derived from the unsaturated carboxylic acid monomer is included in an amount of 10 to 50 parts by weight based on the total 100 parts by weight of the acrylic copolymer.
    Type: Application
    Filed: February 9, 2018
    Publication date: August 9, 2018
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Joong Han KUM, Jeong Ho YOO, Kyoung Moon JUNG, Bong Jin CHOI, Han Young CHOI
  • REFLECTIVE LIGHT CONTROL FILM AND DISPLAY DEVICE FOR A CAR COMPRISING THE SAME
    Publication number: 20180004043
    Abstract: A reflective light control film includes a transparent film having a plurality of protruded line patterns formed on one surface of the base film, each of the protruded line patterns including a first side having an inclination angle with respect to the one surface of the base film and a second side, and a light reflection layer provided on the first side. The reflective light control film has excellent visibility for the screen even if it is not provided with a separate shade, and the screen is prevented from being reflected on the windshield.
    Type: Application
    Filed: June 29, 2017
    Publication date: January 4, 2018
    Inventors: Bong Jin CHOI, Gi Hwan AHN, Joong Han KUM, Jeung Hoon ON, Han Young CHOI