Patents by Inventor Myung-hee Jung

Myung-hee Jung 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: 10253409
    Abstract: The present invention relates to a method for producing graphene on a face-centered cubic metal catalyst having a plane oriented in one direction, and more particularly to a method of producing graphene on a metal catalyst having the (100) or (111) crystal structure and a method of producing graphene using a catalyst metal foil having a single orientation, obtained by electroplating a metal catalyst by a pulse wave current and annealing the metal catalyst. The invention also relates to a method of producing graphene using a metal catalyst, and more particularly to a method of producing graphene, comprising the steps of: alloying a metal catalyst with an alloying element; forming step structures on the metal catalyst substrate in an atmosphere of a gas having a molecular weight of carbon; and supplying hydrocarbon and hydrogen gases to the substrate. On unidirectionally oriented metal catalyst prepared according to the present invention, graphene can be grown uniformly and epitaxially.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: April 9, 2019
    Assignee: SRC Corporation
    Inventors: Kang Hyung Kim, Kwan Sub Maeng, Chol Woo Park, Se Won Cha, Se Youn Hong, Byung Hee Hong, Myung Hee Jung, Kyung Eun Kim, Su Beom Park
  • Publication number: 20180029890
    Abstract: The present invention relates to a method for producing graphene on a face-centered cubic metal catalyst having a plane oriented in one direction, and more particularly to a method of producing graphene on a metal catalyst having the (100) or (111) crystal structure and a method of producing graphene using a catalyst metal foil having a single orientation, obtained by electroplating a metal catalyst by a pulse wave current and annealing the metal catalyst. The invention also relates to a method of producing graphene using a metal catalyst, and more particularly to a method of producing graphene, comprising the steps of: alloying a metal catalyst with an alloying element; forming step structures on the metal catalyst substrate in an atmosphere of a gas having a molecular weight of carbon; and supplying hydrocarbon and hydrogen gases to the substrate. On unidirectionally oriented metal catalyst prepared according to the present invention, graphene can be grown uniformly and epitaxially.
    Type: Application
    Filed: July 20, 2017
    Publication date: February 1, 2018
    Inventors: KANG HYUNG KIM, KWAN SUB MAENG, CHOL WOO PARK, SE WON CHA, SE YOUN HONG, BYUNG HEE HONG, MYUNG HEE JUNG, KYUNG EUN KIM, SU BEOM PARK
  • Patent number: 9776875
    Abstract: The present invention relates to a method for producing graphene on a face-centered cubic metal catalyst having a plane oriented in one direction, and more particularly to a method of producing graphene on a metal catalyst having the (100) or (111) crystal structure and a method of producing graphene using a catalyst metal foil having a single orientation, obtained by electroplating a metal catalyst by a pulse wave current and annealing the metal catalyst. The invention also relates to a method of producing graphene using a metal catalyst, and more particularly to a method of producing graphene, comprising the steps of: alloying a metal catalyst with an alloying element; forming step structures on the metal catalyst substrate in an atmosphere of a gas having a molecular weight of carbon; and supplying hydrocarbon and hydrogen gases to the substrate. On unidirectionally oriented metal catalyst prepared according to the present invention, graphene can be grown uniformly and epitaxially.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: October 3, 2017
    Assignee: SRC Corporation
    Inventors: Kang Hyung Kim, Kwan Sub Maeng, Chol Woo Park, Se Won Cha, Se Youn Hong, Byung He Hong, Myung Hee Jung, Kyung Eun Kim, Su Beom Park
  • 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: 9108848
    Abstract: Example embodiments relate to methods of manufacturing and transferring a larger-sized graphene layer. A method of transferring a larger-sized graphene layer may include forming a graphene layer, a protection layer, and an adhesive layer on a substrate and removing the substrate. The graphene layer may be disposed on a transferring substrate by sliding the graphene layer onto the transferring substrate.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: August 18, 2015
    Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation For Corporate Collaboration
    Inventors: Yun-sung Woo, David Seo, Su-kang Bae, Sun-ae Seo, Hyun-jong Chung, Sae-ra Kang, Jin-seong Heo, Myung-hee Jung
  • Publication number: 20140290565
    Abstract: The present invention relates to a method for producing graphene on a face-centered cubic metal catalyst having a plane oriented in one direction, and more particularly to a method of producing graphene on a metal catalyst having the (100) or (111) crystal structure and a method of producing graphene using a catalyst metal foil having a single orientation, obtained by electroplating a metal catalyst by a pulse wave current and annealing the metal catalyst. The invention also relates to a method of producing graphene using a metal catalyst, and more particularly to a method of producing graphene, comprising the steps of: alloying a metal catalyst with an alloying element; forming step structures on the metal catalyst substrate in an atmosphere of a gas having a molecular weight of carbon; and supplying hydrocarbon and hydrogen gases to the substrate. On unidirectionally oriented metal catalyst prepared according to the present invention, graphene can be grown uniformly and epitaxially.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 2, 2014
    Inventors: Kang Hyung Kim, Kwan Sub Maeng, Chol Woo Park, Se Won Cha, Se Youn Hong, Byung Hee Hong, Myung Hee Jung, Kyung Eun Kim, Su Beom Park
  • Publication number: 20130187097
    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: Application
    Filed: July 15, 2011
    Publication date: July 25, 2013
    Applicants: SAMSUNG TECHWIN CO., LTD., SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Byung Hee Hong, Jong-Hyun Ahn, Ji Beom Yoo, Su Kang Bae, Myung Hee Jung, Houk Jang, Youngbin Lee, Sang Jin Kim
  • Publication number: 20130130011
    Abstract: THE PRESENT INVENTION PROVIDES A METHOD FOR PREPARING GRAPHENE BY PROVIDING A REACTION GAS INCLUDING A CARBON SOURCE AND HEAT ONTO A SUBSTRATE, AND REACTING THE SAME TO FORM A GRAPHENE ON THE SUBSTRATE, A GRAPHENE SHEET FORMED BY THE METHOD, AND A DEVICE USING THE SAME.
    Type: Application
    Filed: July 29, 2011
    Publication date: May 23, 2013
    Applicant: SUNGKYUNKWAN UNIVERSITY FPUNDATION FOR CORPORATE COLLABORATION
    Inventors: Byung Hee Hong, Jong-Hyun Ahn, Su Kang Bae, Myung Hee Jung, Hye Ri Kim, Sang Jin Kim
  • Publication number: 20110108521
    Abstract: Example embodiments relate to methods of manufacturing and transferring a larger-sized graphene layer. A method of transferring a larger-sized graphene layer may include forming a graphene layer, a protection layer, and an adhesive layer on a substrate and removing the substrate. The graphene layer may be disposed on a transferring substrate by sliding the graphene layer onto the transferring substrate.
    Type: Application
    Filed: September 21, 2010
    Publication date: May 12, 2011
    Inventors: Yun-sung Woo, David Seo, Su-kang Bae, Sun-ae Seo, Hyun-jong Chung, Sae-ra Kang, Jin-seong Heo, Myung-hee Jung