Patents by Inventor Bumwook Roh

Bumwook Roh 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: 8524420
    Abstract: Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: September 3, 2013
    Assignees: Hyundai Motor Company, SNU & R&DB Foundation
    Inventors: Nak Hyun Kwon, Jae Seung Lee, Bumwook Roh, Yung-Eun Sung, Tae-Yeol Jeon, Hee-Young Park, Ju Wan Lim, Young-Hoon Chung
  • Publication number: 20110129762
    Abstract: The present invention features a method for increasing hydrophilic properties of crystalline carbon using a surface modifier and a method for preparing a Pt/C catalyst using the same. In certain preferred embodiments, the present invention features a method for increasing hydrophilic properties of crystalline carbon having water repellency by forming ?-? interaction between the surface of the crystalline carbon and a surface modifier and a method for preparing a catalyst by supporting platinum (Pt) on the crystalline carbon having increased hydrophilic property. The Pt/C catalyst prepared by the methods of the present invention is useful for the preparation of electrode materials for fuel cells.
    Type: Application
    Filed: March 31, 2010
    Publication date: June 2, 2011
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, Industry-Academic Cooperation Foundation, Younsei University
    Inventors: Ki Sub Lee, Bumwook Roh, Han Sung Kim, Hyung-Suk Oh
  • Publication number: 20110123908
    Abstract: Disclosed is a method for preparing nickel or palladium nanoparticles supported on a carbon support. To a mixture solution wherein a stabilizer is dissolved in 1,2-propanediol, a carbon support is added to prepare a dispersion. Then, a precursor solution wherein a nickel or palladium precursor dissolved in 1,2-propanediol is mixed therewith and stirred. Then, nickel or palladium nanoparticles supported on the carbon support are prepared by reduction. The disclosed method for preparing nickel or palladium nanoparticles supported on a carbon support allows preparation of nanoparticles with narrow particle size distribution and good dispersibility through a simple process and the resulting nickel or palladium nanoparticles may be usefully applied, for example, as electrode materials of fuel cells.
    Type: Application
    Filed: May 13, 2010
    Publication date: May 26, 2011
    Applicants: HYUNDAI MOTOR COMPANY, SNU R&DB FOUNDATION
    Inventors: Nak Hyun Kwon, Jae Seung Lee, Bumwook Roh, Yung-Eun Sung, Tae-Yeol Jeon, Hee-Young Park, Ju Wan Lim, Young-Hoon Chung
  • Publication number: 20100227756
    Abstract: The present invention provides a method for manufacturing a catalyst for a fuel cell. The method of the present invention can manufacture a cathode catalyst for a fuel cell having excellent corrosion resistance using carbon nanocages (CNC).
    Type: Application
    Filed: July 28, 2009
    Publication date: September 9, 2010
    Applicants: HYUNDAI MOTOR COMPANY, Industry-Academic Cooperation Foundation, Younsei University
    Inventors: Hansung Kim, Katie Heeyum Lim, Hyung-Suk Oh, In Chul Hwang, Bumwook Roh