Patents Assigned to GRAPHENE SQUARE INC.
  • Patent number: 12108513
    Abstract: The present specification provides a heating system including: a heating unit including a substrate and a heating layer provided on the substrate and including graphene; an electromagnetic wave irradiation unit configured to irradiate at least one region of the heating unit with electromagnetic waves; and a control unit configured to control an operation of the electromagnetic wave irradiation unit, wherein the heating layer emits heat by absorbing the electromagnetic waves.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: October 1, 2024
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC.
    Inventors: Byung Hee Hong, Sang Min Kang, Young Soo Kim
  • Patent number: 11933955
    Abstract: A method of evaluating quality of graphene using a confocal laser scanning microscope, the method comprising steps of: irradiating with laser light a graphene layer formed on a catalyst layer; detecting a signal of light reflected from the graphene layer; forming a planar image of the graphene layer using the detected optical signal; and analyzing a contrast between graphene and the catalyst layer in the planar image, wherein the graphene layer is continuously formed on the catalyst layer by a roll-to-roll process.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: March 19, 2024
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC., Dankook University Cheonan Campus Industry Academic Cooperation Foundation
    Inventors: Byung Hee Hong, Dong Jin Kim, Yun Sung Woo
  • Patent number: 11927835
    Abstract: The present specification provides a functional contact lens including: a lens substrate having a spherically curved surface so as to be worn on an eyeball; and a functional layer provided on at least one surface of the lens substrate and including a graphene sheet, and a method for manufacturing the same.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: March 12, 2024
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC.
    Inventors: Byung Hee Hong, Sangkyu Lee, Insu Jo, Sangmin Kang
  • Patent number: 11843108
    Abstract: The present disclosure provides an electrode structure including a metal thin film and a patterned graphene-graphitic carbon composite layer disposed on the metal thin film, a method for fabricating the electrode structure using laser printing, and an electrochemical device including the same.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 12, 2023
    Assignees: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE, INC.
    Inventors: Byung Hee Hong, Sang Min Kang, Quang Trung Truong
  • Patent number: 11071241
    Abstract: A method for shielding electromagnetic waves by using grapheme formed on inside or outside a device having an electromagnetic wave generating source and/or by using graphene formed on a substrate, an electromagnetic shielding material and film including the graphene, and an electronic or electric device including the electromagnetic wave shielding film.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: July 20, 2021
    Assignee: Graphene Square Inc.
    Inventors: Byung Hee Hong, Jea-Boong Choi, Young Jin Kim, Hyeongkeun Kim, Sukang Bae, Junmo Kang
  • Patent number: 10947113
    Abstract: The present disclosure relates to a manufacturing method of a graphene fiber, a graphene fiber manufactured by the same method, and use thereof. The graphene fiber formed by using graphenes of linear pattern can be applied to various fields such as an electric wire and coaxial cable.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: March 16, 2021
    Assignee: GRAPHENE SQUARE INC.
    Inventors: Byung Hee Hong, Keun Soo Kim, Hyeong Keun Kim, Su Kang Bae
  • Patent number: 10886501
    Abstract: The present invention relates to a method for forming a graphene protective film having gas and moisture barrier properties, to a graphene protective film formed by the method, and to the use thereof. A single-layer or multilayer graphene protective film can be used as a material for a barrier coating or bags, and improves the gas and moisture barrier properties of a variety of devices in a wide array of industrial fields to thereby maintain the electrical characteristics of devices over a long period of time.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 5, 2021
    Assignee: Graphene Square, Inc.
    Inventors: Jonghyun Ahn, Byung Hee Hong, Youngbin Lee, Hyeong Keun Kim, Su Kang Bae
  • Patent number: 10808321
    Abstract: A graphene roll-to-roll coating apparatus and a graphene roll-to-roll coating method are provided on the basis of a continuous process.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: October 20, 2020
    Assignee: Graphene Square Inc.
    Inventors: Byung Hee Hong, Young Jin Kim, Jaeboong Choi, Hyeong Keun Kim, Junmo Kang, Su Kang Bae
  • Patent number: 10315401
    Abstract: The present invention relates to a transferring method of graphene using a self-adhesive film.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: June 11, 2019
    Assignees: Seoul National University R&DB Foundation, Graphene Square Inc.
    Inventors: Byung Hee Hong, Sang Jin Kim, Myung Jin Park, In Su Jo
  • Patent number: 10266948
    Abstract: A graphene roll-to-roll coating apparatus and a graphene roll-to-roll coating method are provided on the basis of a continuous process.
    Type: Grant
    Filed: August 18, 2014
    Date of Patent: April 23, 2019
    Assignee: Graphene Square Inc.
    Inventors: Byung Hee Hong, Young Jin Kim, Jaeboong Choi, Hyeong Keun Kim, Junmo Kang, Su Kang Bae
  • Patent number: 10196272
    Abstract: Disclosed is an apparatus and method of manufacturing a graphene film, wherein the apparatus includes a wrinkle flattening device configured to flatten wrinkles in a lamination structure including a base substrate and a graphene film laminated on the base substrate; and a first lamination apparatus configured to laminate a first substrate on the graphene film, wherein the wrinkle flattening device applies a vacuum to the base substrate when the wrinkle flattening device is in contact with the base substrate.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: February 5, 2019
    Assignee: Graphene Square, Inc.
    Inventors: Wan Soo Kim, Jung Hee Han, Byung Hee Hong
  • Patent number: 9966531
    Abstract: A patterning method of a graphene, including a step of forming a graphene layer on a polymer substrate; and a step of forming a nanopattern in the graphene layer by hot embossing imprinting. The step of forming a nanopattern in the graphene layer by hot embossing imprinting includes contacting a hot mold, in which a nanopattern is formed, or contacting a roll-to-roll hot mold, in which a nanopattern is formed, to the graphene layer, followed by heating and pressing the graphene layer. In the step of forming a nanopattern in the graphene layer, the graphene layer is cleaved by a protrusion of the nanopattern formed on the hot mold or the hot roll-to-roll mold, and the cleaved graphene is present on each of a protrusion and a recessed portion of the nanopattern formed in the polymer substrate under the graphene later.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 8, 2018
    Assignee: Graphene Square, Inc.
    Inventors: Byung Hee Hong, Jung Hee Han
  • Patent number: 9782963
    Abstract: The present disclosure relates to a graphene roll-to-roll transfer method, a graphene roll-to-roll transfer apparatus, a graphene roll manufactured by the graphene roll-to-roll transfer method, and uses thereof.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: October 10, 2017
    Assignee: Graphene Square, Inc.
    Inventors: Byung Hee Hong, Jonghyun Ahn, Sukang Bae, Hyeong Keun Kim
  • Patent number: 9726861
    Abstract: The present disclosure relates to a variable focus lens containing graphene, a preparing method of the variable focus lens, a focus controlling method of the variable focus lens, and a display device including the variable focus lens.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: August 8, 2017
    Assignees: Graphene Square, Inc., SNU R&DB Foundation
    Inventors: Byung Hee Hong, Jun Mo Kang
  • Patent number: 9728605
    Abstract: The present disclosure relates to roll-to-roll doping method of graphene film, and doped graphene film.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 8, 2017
    Assignee: Graphene Square, Inc.
    Inventors: Byung Hee Hong, Jonghyun Ahn, Hyeong Keun Kim, Sukang Bae
  • Publication number: 20170029279
    Abstract: Disclosed is an apparatus and method of manufacturing a graphene film, wherein the apparatus includes a wrinkle flattening device configured to flatten wrinkles in a lamination structure including a base substrate and a graphene film laminated on the base substrate; and a first lamination apparatus configured to laminate a first substrate on the graphene film, wherein the wrinkle flattening device applies a vacuum to the base substrate when the wrinkle flattening device is in contact with the base substrate.
    Type: Application
    Filed: May 9, 2016
    Publication date: February 2, 2017
    Applicant: Graphene Square, Inc.
    Inventors: Wan Soo KIM, Jung Hee HAN, Byung Hee HONG
  • Patent number: 9371234
    Abstract: The present invention relates to a method for forming graphene at a low temperature, to a method for direct transfer of graphene using same, and to a graphene sheet. The method for forming graphene at a low temperature comprises supplying a carbon-source-containing gas to a metal catalyst layer for graphene growth formed on a substrate, and forming graphene at a low temperature of 500° C. or less by means of inductively coupled plasma-chemical vapor deposition (ICP-CVD).
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: June 21, 2016
    Assignees: Graphene Square, Inc., Hanwha Techwin Co., Ltd.
    Inventors: Byung Hee Hong, Jong-Hyun Ahn, Ji Beom Yoo, Su Kang Bae, Myung Hee Jung, Houk Jang, Youngbin Lee, Sang Jin Kim
  • Patent number: 9297831
    Abstract: A touch sensor capable of specifying a touch position and/or a degree of a touch pressure by using graphene as an electrode and/or a strain gauge, and more particular, a touch sensor capable of simultaneously detecting a pressure and a position by means of change in resistance by using graphene is provided.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: March 29, 2016
    Assignee: Graphene Square, Inc.
    Inventors: Jong-Hyun Ahn, Byung Hee Hong, Young Bin Lee, Su Kang Bae, Hyeong Keun Kim
  • Publication number: 20150314579
    Abstract: The present invention relates to a transferring method of graphene using a self-adhesive film.
    Type: Application
    Filed: July 9, 2015
    Publication date: November 5, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, GRAPHENE SQUARE INC.
    Inventors: Byung H. Hong, Sang J. Kim, Myung J. Park, In S. Jo
  • Patent number: D1027538
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: May 21, 2024
    Assignee: GRAPHENE SQUARE INC.
    Inventor: Seong Chae Park