Patents by Inventor Jong-Jin Yoon

Jong-Jin Yoon 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).

  • Polymer electrolyte membrane fuel cell
    Publication number: 20040033413
    Abstract: The present invention provides a separator for a polymer electrolyte membrane fuel cell which comprises a resin substrate and an electroconductive coating formed on the substrate.
    Type: Application
    Filed: August 18, 2003
    Publication date: February 19, 2004
    Inventors: Jong-Jin Yoon, Il-Ji Lim, Akihisa Saitoh
  • Cellular phone
    Patent number: D487443
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: March 9, 2004
    Assignee: Curitel Communications, Inc.
    Inventor: Jong-Jin Yoon
  • Cellular phone
    Patent number: D487444
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: March 9, 2004
    Assignee: Curitel Communications, Inc.
    Inventor: Jong-Jin Yoon
  • Foldable wireless telephone housing
    Patent number: D421604
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: March 14, 2000
    Assignee: Hyundai Electronics Ind. Co., Ltd.
    Inventor: Jong-Jin Yoon