Patents by Inventor Dong-kwan Won

Dong-kwan Won 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).

  • Patent number: 11486035
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: November 1, 2022
    Assignee: Versarien PLC
    Inventors: Dong-kwan Won, Won-Sik Nam
  • Patent number: 10882748
    Abstract: Provided is a graphene synthesis apparatus including a chamber; a heating unit provided in the chamber; a heat conversion unit provided closer to a central portion of the chamber than the heating unit; and a catalyst provided on the heat conversion unit, wherein the catalyst is formed of thin and long metal.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: January 5, 2021
    Assignee: HAESUNG DS CO., LTD.
    Inventor: Dong Kwan Won
  • Patent number: 10714231
    Abstract: Provided are a graphene wire, a cable to which the graphene wire is applied, and a method of manufacturing the graphene wire. The graphene wire includes a catalytic metal wire and a graphene layer coated on a surface of the catalytic metal wire, and the catalytic metal wire includes a stranded cable in which at least two core wires are twisted around each other.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: July 14, 2020
    Assignee: Haesung DS CO., LTD.
    Inventors: Dong Kwan Won, Jae Chul Ryu
  • Publication number: 20200135357
    Abstract: Provided is an electric wire structure including a copper (Cu) electric wire extending in a direction; and a graphene coating layer formed on an outer portion of the Cu electric wire to surround the Cu electric wire, wherein the Cu electric wire includes Cu having a purity of 99.9% or greater.
    Type: Application
    Filed: December 31, 2019
    Publication date: April 30, 2020
    Applicant: Haesung DS CO., Ltd.
    Inventors: Dong Kwan WON, Hyun Tae LIM, Jae Chul RYU
  • Publication number: 20200123658
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicants: HANWHA AEROSPACE CO., LTD., NPS Corporation
    Inventors: Dong-kwan WON, Won-Sik NAM
  • Publication number: 20190385761
    Abstract: Provided are a graphene wire, a cable to which the graphene wire is applied, and a method of manufacturing the graphene wire. The graphene wire includes a catalytic metal wire and a graphene layer coated on a surface of the catalytic metal wire, and the catalytic metal wire includes a stranded cable in which at least two core wires are twisted around each other.
    Type: Application
    Filed: February 27, 2017
    Publication date: December 19, 2019
    Applicant: HAESUNG DS CO., LTD.
    Inventors: Dong Kwan WON, Jae Chul RYU
  • Publication number: 20190368042
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Applicants: HANWHA AEROSPACE CO., LTD., NPS Corporation
    Inventors: Dong-kwan WON, Won-Sik NAM
  • Publication number: 20190368043
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Application
    Filed: August 14, 2019
    Publication date: December 5, 2019
    Applicants: HANWHA AEROSPACE CO., LTD., NPS Corporation
    Inventors: Dong-kwan WON, Won-Sik NAM
  • Patent number: 10480075
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: November 19, 2019
    Assignees: NPS Corporation, HANWHA AEROSPACE CO., LTD.
    Inventors: Dong-kwan Won, Won-Sik Nam
  • Publication number: 20190070578
    Abstract: Provided is a graphene synthesis apparatus including a chamber; a heating unit provided in the chamber; a heat conversion unit provided closer to a central portion of the chamber than the heating unit; and a catalyst provided on the heat conversion unit, wherein the catalyst is formed of thin and long metal.
    Type: Application
    Filed: July 26, 2016
    Publication date: March 7, 2019
    Inventor: Dong Kwan WON
  • Patent number: 10040683
    Abstract: A method of fabricating multi-layered graphene includes disposing a first graphene layer on a carrier; disposing at least one second graphene layer on the first graphene layer to form a graphene sheet disposed on the carrier; and transferring the graphene sheet disposed on the carrier onto a substrate, wherein each of the graphene layers which constitute the graphene sheet has at least one damaged region, and the at least one damaged region of each of the graphene layers contacts at least one of non-damaged regions of a graphene layer or graphene layers, of the graphene layers, contacting the each of the graphene layers.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 7, 2018
    Assignees: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION, Hanwha Techwin Co., Ltd.
    Inventors: Jong-hyuk Yoon, Duk-hwa Na, Young-il Song, Dong-kwan Won, Byung-hee Hong, Na-young Kim
  • Publication number: 20180190406
    Abstract: Provided is an electric wire structure including a copper (Cu) electric wire extending in a direction; and a graphene coating layer formed on an outer portion of the Cu electric wire to surround the Cu electric wire, wherein the Cu electric wire includes Cu having a purity of 99.9% or greater.
    Type: Application
    Filed: August 2, 2016
    Publication date: July 5, 2018
    Applicant: Haesung DS CO., Ltd.
    Inventors: Dong Kwan WON, Hyun Tae LIM, Jae Chul RYU
  • Publication number: 20170268108
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Application
    Filed: June 1, 2017
    Publication date: September 21, 2017
    Applicants: NPS Corporation, Hanwha Techwin Co., Ltd.
    Inventors: Dong-kwan WON, Won-Sik NAM
  • Publication number: 20160319431
    Abstract: A graphene synthesis chamber includes: a chamber case in which a substrate including a metal thin film is placed; a gas supply unit which supplies at least one gas comprising a carbon gas into an inner space of the chamber case; a main heating unit which emits at least one light to the inner space to heat the substrate; and at least one auxiliary heating unit which absorbs the at least one light and emits radiant heat toward the substrate.
    Type: Application
    Filed: July 7, 2016
    Publication date: November 3, 2016
    Applicants: NPS Corporation, Hanwha Techwin Co., Ltd.
    Inventors: Dong-kwan WON, Won-Sik NAM
  • Patent number: 9315001
    Abstract: Provided are method and apparatus for transferring graphene. The graphene transferring method includes: a graphene synthesizing operation comprising forming at least one layer of graphene on at least one surface of a catalyst metal film; a substrate film attaching operation comprising contacting an adhesive first surface of the substrate film to the at least one layer of graphene and compressing the catalyst metal film and the substrate film by using a first roller; and a substrate film separating operation comprising separating the substrate film from the catalyst metal film such that the at least one layer of graphene is separated from the catalyst metal film together with the substrate film.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: April 19, 2016
    Assignee: Hanwha Techwin Co., Ltd.
    Inventors: Duk-Hwa Na, Jong-Hyuk Yoon, Young-Il Song, Dong-Kwan Won
  • Publication number: 20150353362
    Abstract: A graphene manufacturing apparatus includes a gas supplying unit supplying a gas including carbon; a gas heating unit heating the gas supplied from the gas supplying unit; a deposition chamber in which a substrate having a catalyst layer is disposed; and an inlet pipe introducing the gas of the gas heating unit into the deposition chamber. A temperature of the deposition chamber is set at a temperature lower than a temperature of the gas heating unit so that a selection range with respect to a catalyst metal to be used in the catalyst layer may be expanded, and damage of the substrate due to a high temperature heat may be minimized.
    Type: Application
    Filed: August 20, 2015
    Publication date: December 10, 2015
    Applicant: Hanwha Techwin Co., Ltd.
    Inventors: Dong-kwan WON, Seung-min CHO
  • Patent number: 9136112
    Abstract: Provided is a method of post treating graphene including providing graphene on a metal thin film, providing a carrier on the graphene, hardening the carrier, and removing the metal thin film from the graphene.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: September 15, 2015
    Assignee: Hanwha Techwin Co., Ltd.
    Inventors: Dong-Kwan Won, Seung-Min Cho, Jong-Hyuk Yoon, Doc-Hwa Na
  • Patent number: 9128050
    Abstract: An apparatus and method for inspecting a graphene board. The graphene board inspecting apparatus for inspecting a graphene board on which at least one graphene layer is formed includes: a light processing unit which emits at least one light on the graphene board, receives the at least one light penetrating the graphene board and converts the received at least one light to an output signal; a transmittance detecting unit which receives the output signal from the light processing unit to inspect a transmittance of the at least one light penetrating the graphene board; and a determination unit which is connected to the transmittance detecting unit and receives the detected transmittance to determine a state of the graphene board by analyzing the detected transmittance.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 8, 2015
    Assignee: Hanwha Techwin Co., Ltd.
    Inventor: Dong-kwan Won
  • Publication number: 20130265567
    Abstract: An apparatus and method for inspecting a graphene board. The graphene board inspecting apparatus for inspecting a graphene board on which at least one graphene layer is formed includes: a light processing unit which emits at least one light on the graphene board, receives the at least one light penetrating the graphene board and converts the received at least one light to an output signal; a transmittance detecting unit which receives the output signal from the light processing unit to inspect a transmittance of the at least one light penetrating the graphene board; and a determination unit which is connected to the transmittance detecting unit and receives the detected transmittance to determine a state of the graphene board by analyzing the detected transmittance.
    Type: Application
    Filed: November 30, 2012
    Publication date: October 10, 2013
    Applicant: Samsung Techwin Co., Ltd.
    Inventor: Dong-kwan WON
  • Publication number: 20130233480
    Abstract: Provided are method and apparatus for transferring graphene. The graphene transferring method includes: a graphene synthesizing operation comprising forming at least one layer of graphene on at least one surface of a catalyst metal film; a substrate film attaching operation comprising contacting an adhesive first surface of the substrate film to the at least one layer of graphene and compressing the catalyst metal film and the substrate film by using a first roller; and a substrate film separating operation comprising separating the substrate film from the catalyst metal film such that the at least one layer of graphene is separated from the catalyst metal film together with the substrate film.
    Type: Application
    Filed: November 17, 2011
    Publication date: September 12, 2013
    Applicant: SAMSUNG TECHWIN CO., LTD.
    Inventors: Duk-Hwa Na, Jong-Hyuk Yoon, Young-Il Song, Dong-Kwan Won