Patents by Inventor Sung Hun Ryu

Sung Hun Ryu 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).

  • Graphene-nano particle composite having nano particles crystallized therein at a high density
    Patent number: 9714171
    Abstract: The present invention relates to a graphene-nanoparticle composite having a structure in which nanoparticles are crystallized in a carbon-based material, for example, graphene, at a high density, and, more particularly, to a graphene-nanoparticle composite capable of remarkably improving physical properties such as contact characteristics between basal planes of graphene and conductivity, wherein nanoparticles are included as a large amount of 30% by weight or more, based on 100% by weight of graphene, and crystallized nanoparticles have an average particle diameter of 200 nm or more, and a method of preparing the same.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: July 25, 2017
    Assignee: CHEORWON PLASMA RESEARCH INSTITUTE
    Inventors: Steven Kim, Byung-Koo Son, Myoung-Sun Shin, Sung-Hun Ryu, Sun-Yong Choi, Kyu-Hang Lee
  • Graphene-nano particle composite having nanoparticles crystallized therein at a high density
    Patent number: 9711256
    Abstract: The present invention relates to a graphene-nanoparticle composite having a structure in which nanoparticles are crystallized at a high density in a carbon-based material, for example, graphene, and, more particularly, to a graphene-nanoparticle composite capable of remarkably improving physical properties such as contact characteristics between basal planes of graphene and conductivity since nanoparticles are included as a large amount of 20 to 50% by weight, based on 100% by weight of graphene, and a method of preparing the same.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: July 18, 2017
    Assignee: CHEORWON PLASMA RESEARCH INSTITUTE
    Inventors: Steven Kim, Byung-Koo Son, Myoung-Sun Shin, Sung-Hun Ryu, Sun-Yong Choi, Kyu-Hang Lee
  • GRAPHENE-NANO PARTICLE COMPOSITE HAVING NANOPARTICLES CRYSTALLIZED THEREIN AT A HIGH DENSITY
    Publication number: 20150179294
    Abstract: The present invention relates to a graphene-nanoparticle composite having a structure in which nanoparticles are crystallized at a high density in a carbon-based material, for example, graphene, and, more particularly, to a graphene-nanoparticle composite capable of remarkably improving physical properties such as contact characteristics between basal planes of graphene and conductivity since nanoparticles are included as a large amount of 20 to 50% by weight, based on 100% by weight of graphene, and a method of preparing the same.
    Type: Application
    Filed: December 24, 2013
    Publication date: June 25, 2015
    Applicant: CHEORWON PLASMA RESEARCH INSTITUTE
    Inventors: Steven KIM, Byung-Koo Son, Myoung-Sun Shin, Sung-Hun Ryu, Sun-Yong Choi, Kyu-Hang Lee
  • GRAPHENE-NANO PARTICLE COMPOSITE HAVING NANO PARTICLES CRYSTALLIZED THEREIN AT A HIGH DENSITY
    Publication number: 20140219906
    Abstract: The present invention relates to a graphene-nanoparticle composite having a structure in which nanoparticles are crystallized in a carbon-based material, for example, graphene, at a high density, and, more particularly, to a graphene-nanoparticle composite capable of remarkably improving physical properties such as contact characteristics between basal planes of graphene and conductivity, wherein nanoparticles are included as a large amount of 30% by weight or more, based on 100% by weight of graphene, and crystallized nanoparticles have an average particle diameter of 200 nm or more, and a method of preparing the same.
    Type: Application
    Filed: December 27, 2013
    Publication date: August 7, 2014
    Applicant: CHEORWON PLASMA RESEARCH INSTITUTE
    Inventors: Steven KIM, Byung-Koo Son, Myoung-Sun Shin, Sung-Hun Ryu, Sun-Yong Choi, Kyu-Hang Lee
  • MOLDING MATERIAL FOR FUEL CELL SEPARATOR
    Publication number: 20140134520
    Abstract: The present invention relates to a molding material for a fuel cell separator including a graphite complex having a mixture of expandable graphite and non-expandable graphite; at least one of the conductive fillers selected from the group consisting of carbon black, carbon fiber and carbon nanotube; and at least one resin selected from a thermoplastic resin and thermosetting resin. With the present invention, both the mechanical strength and electrical conductivity of the fuel cell separator can be simultaneously improved.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Inventors: Nam Ik IM, Kwang Yong LEE, Jeong Heon KIM, Ho Sub LEE, Sung Hun RYU
  • MOLDING MATERIAL FOR FUEL CELL SEPARATOR
    Publication number: 20100129695
    Abstract: The present invention relates to a molding material for a fuel cell separator including a graphite complex having a mixture of expandable graphite and non-expandable graphite; at least one of the conductive fillers selected from the group consisting of carbon black, carbon fiber and carbon nanotube; and at least one resin selected from a thermoplastic resin and thermosetting resin. With the present invention, both the mechanical strength and electrical conductivity of the fuel cell separator can be simultaneously improved.
    Type: Application
    Filed: June 29, 2009
    Publication date: May 27, 2010
    Applicant: Hankook Tire Co., Ltd., a Korean Corporation
    Inventors: Nam Ik Im, Kwang Yong Lee, Jeong Heon Kim, Ho Sub Lee, Sung Hun Ryu