Patents by Inventor Chol Woo Park

Chol Woo Park 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
  • 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