Patents by Inventor Hyung Koo KANG

Hyung Koo KANG 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).

  • Methods for manufacturing polarizing element, polarizing element roll and single sheet type polarizing element having local bleaching areas
    Patent number: 10436960
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one or more of iodine and dichroic dye is oriented in a certain direction; partially bleaching the polyvinyl alcohol-based polarizer by bringing a bleaching solution into contact with one surface of the polyvinyl alcohol-based polarizer through a printing method; and correcting an appearance of the partially bleached polarizing element.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 8, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Beom Seok Lee, Eung Jin Jang, Kyun Il Rah, Hyung Koo Kang, Byung Sun Lee, Du Jin Choi, Ho Jeong Yun
  • Methods for manufacturing polarizing element, polarizing element roll and single sheet type polarizing element having local bleaching areas
    Patent number: 10429560
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one of iodine and dichroic dye is oriented in a certain direction; forming a mask layer including at least one punched area on one surface of the polarizing element; partially bleaching the polarizing element formed with the mask layer by immersing the polarizing element into a bleaching solution; and correcting an appearance of the partially bleached polarizing element.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: October 1, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Beom Seok Lee, Eung Jin Jang, Kyun Il Rah, Hyung Koo Kang, Byung Sun Lee, Du Jin Choi, Ho Jeong Yun
  • Method for manufacturing polarizer, and polarizer and polarizing plate manufactured using same
    Patent number: 10228501
    Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: March 12, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jae Il Ryu, Eung Jin Jang, Jin Yong Park, Eungki Lee, Hyung Koo Kang, Taek Geun Nam, Deok Woo Park, Young Gon Kim, Yeon Soo Kim, You Kyeong Kim
  • METHOD FOR MANUFACTURING POLARIZER, AND POLARIZER AND POLARIZING PLATE MANUFACTURED USING SAME
    Publication number: 20170285236
    Abstract: The present invention relates to a method for manufacturing a polarizer, including: a) immersing and swelling a polyvinyl alcohol-based film in an aqueous solution containing an azo-based dye having an absorption wavelength of 300 nm to 550 nm; b) dyeing the swollen polyvinyl alcohol-based film with an iodine-based dye; and c) stretching the dyed polyvinyl alcohol-based film, and a polarizer manufactured using the method.
    Type: Application
    Filed: September 21, 2015
    Publication date: October 5, 2017
    Inventors: Jae Il RYU, Eung Jin JANG, Jin Yong PARK, Eungki LEE, Hyung Koo KANG, Taek Geun NAM, Deok Woo PARK, Young Gon KIM, Yeon Soo KIM, You Kyeong KIM
  • METHOD FOR MANUFACTURING POLARIZING PLATE AND POLARIZING PLATE MANUFACTURED USING SAME
    Publication number: 20170254939
    Abstract: The present specification relates to a method for manufacturing a polarizing plate and a polarizing plate manufactured using the same. More specifically, the present specification relates to a method for manufacturing a polarizing plate which locally has a depolarized area and a polarizing plate manufactured using the same.
    Type: Application
    Filed: October 5, 2015
    Publication date: September 7, 2017
    Inventors: Byung Sun LEE, Hyung Koo KANG, Ho Jeong YUN, Eung Jin JANG, Kyun II RAH
  • METHODS FOR MANUFACTURING POLARIZING ELEMENT, POLARIZING ELEMENT ROLL AND SINGLE SHEET TYPE POLARIZING ELEMENT HAVING LOCAL BLEACHING AREAS (AS AMENDED)
    Publication number: 20160377777
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one or more of iodine and dichroic dye is oriented in a certain direction; partially bleaching the polyvinyl alcohol-based polarizer by bringing a bleaching solution into contact with one surface of the polyvinyl alcohol-based polarizer through a printing method; and correcting an appearance of the partially bleached polarizing element.
    Type: Application
    Filed: March 25, 2015
    Publication date: December 29, 2016
    Applicant: LG Chem, Ltd.
    Inventors: Beom Seok LEE, Eung Jin JANG, Kyun Il RAH, Hyung Koo KANG, Byung Sun LEE, Du Jin CHOI, Ho Jeong YUN
  • METHODS FOR MANUFACTURING POLARIZING ELEMENT, POLARIZING ELEMENT ROLL AND SINGLE SHEET TYPE POLARIZING ELEMENT HAVING LOCAL BLEACHING AREAS (AS AMENDED)
    Publication number: 20160299271
    Abstract: The present invention relates to a method for manufacturing a polarizing element including locally bleached areas including steps of providing a polarizing element including a polyvinyl alcohol-based polarizer in which at least one of iodine and dichroic dye is oriented in a certain direction; forming a mask layer including at least one punched area on one surface of the polarizing element; partially bleaching the polarizing element formed with the mask layer by immersing the polarizing element into a bleaching solution; and correcting an appearance of the partially bleached polarizing element.
    Type: Application
    Filed: March 25, 2015
    Publication date: October 13, 2016
    Inventors: Beom Seok LEE, Eung Jin JANG, Kyun Il RAH, Hyung Koo KANG, Byung Sun LEE, Du Jin CHOI, Ho Jeong YUN