Patents by Inventor Yeong-Eun Yoo

Yeong-Eun Yoo 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: 7981345
    Abstract: Disclosed is a fabrication method of products with closed channels by injection molding, which includes: a channel substrate mounting step of mounting a channel substrate comprising a plurality of opened micro-channels thereon to a mold; and a substrate cover molding step of molding a substrate cover by the injection molding on an upper surface of the channel substrate mounted to the mold, the substrate cover being coupled to the channel substrate while being molded. With this, the products with the closed channels can be fabricated without any additional coupling process between the channel substrate having the opened channels and the substrate cover, thereby simplifying a fabrication process and enhancing work efficiency.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: July 19, 2011
    Assignee: Korea Institute of Machinery and Materials
    Inventors: Yeong-Eun Yoo, Doo-Sun Choi, Young-Ho Seo, Tae-Hoon Kim
  • Publication number: 20100201028
    Abstract: Disclosed is a fabrication method of products with closed channels by injection molding, which includes: a channel substrate mounting step of mounting a channel substrate comprising a plurality of opened micro-channels thereon to a mold; and a substrate cover molding step of molding a substrate cover by the injection molding on an upper surface of the channel substrate mounted to the mold, the substrate cover being coupled to the channel substrate while being molded. With this, the products with the closed channels can be fabricated without any additional coupling process between the channel substrate having the opened channels and the substrate cover, thereby simplifying a fabrication process and enhancing work efficiency.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 12, 2010
    Inventors: Yeong-Eun Yoo, Doo-Sun Choi, Young-Ho Seo, Tae-Hoon Kim
  • Patent number: 6607857
    Abstract: A composite separator plate for a fuel cell having a low-carbon loading and a high-polymer loading is disclosed. The separator plate composition includes a percentage of conductive fibrous filler having a relatively high aspect-ratio oriented through the thickness of the plate to achieve desired electrical and thermal conductivity requirements. A method of manufacturing the fuel separator plate having such fibers disposed in a through-plane orientation is also disclosed. The method includes forming a separator plate having a land height for orienting the fibers in a desired through-plane direction, then removing a portion of the land height to obtained the desired geometric configuration for the separator plate.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: August 19, 2003
    Assignee: General Motors Corporation
    Inventors: Richard H. Blunk, Charles L. Tucker, Yeong-Eun Yoo, Daniel J. Lisi
  • Publication number: 20020182473
    Abstract: A composite separator plate for a fuel cell having a low-carbon loading and a high-polymer loading is disclosed. The separator plate composition includes a percentage of conductive fibrous filler having a relatively high aspect-ratio oriented through the thickness of the plate to achieve desired electrical and thermal conductivity requirements. A method of manufacturing the fuel separator plate having such fibers disposed in a through-plane orientation is also disclosed. The method includes forming a separator plate having a land height for orienting the fibers in a desired through-plane direction, then removing a portion of the land height to obtained the desired geometric configuration for the separator plate.
    Type: Application
    Filed: May 31, 2001
    Publication date: December 5, 2002
    Inventors: Richard H. Blunk, Charles L. Tucker, Yeong-Eun Yoo, Daniel J. Lisi