Patents by Inventor Duck-Hwa NA

Duck-Hwa NA 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).

  • Method of manufacturing graphene film and graphene film manufactured thereby
    Patent number: 10379442
    Abstract: According to an aspect of the present invention, there is provided a method of manufacturing a graphene film, the method including: preparing a catalyst metal having at least a surface on which graphene is formed; forming a support layer on the graphene; and isolating the graphene and the support layer from the catalyst metal by dipping the catalyst metal in an electrolytic solution perpendicularly to a liquid surface of the electrolytic solution when a voltage is applied to the catalyst metal.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: August 13, 2019
    Assignee: HANWHA AEROSPACE CO., LTD.
    Inventors: Duck-Hwa Na, Eun-Kyu Lee, Jong-Hyuk Yoon
  • METHOD OF MANUFACTURING GRAPHENE FILM AND GRAPHENE FILM MANUFACTURED THEREBY
    Publication number: 20150368112
    Abstract: According to an aspect of the present invention, there is provided a method of manufacturing a graphene film, the method including: preparing a catalyst metal having at least a surface on which graphene is formed; forming a support layer on the graphene; and isolating the graphene and the support layer from the catalyst metal by dipping the catalyst metal in an electrolytic solution perpendicularly to a liquid surface of the electrolytic solution when a voltage is applied to the catalyst metal.
    Type: Application
    Filed: April 26, 2013
    Publication date: December 24, 2015
    Applicant: HANWHA TECHWIN CO., LTD.
    Inventors: Duck-Hwa NA, Eun-Kyu LEE, Jong-Hyuk YOON