Patents by Inventor Hyeon-Deok Seo

Hyeon-Deok Seo 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).

  • HINGE APPARATUS FOR A DOOR
    Publication number: 20110302743
    Abstract: The present invention relates to a hinge device for doors which are used in products, such as refrigerators, etc., to open and close them. In the hinge device, an upper operation unit is connected to a lower operation unit in such a way that a lower cam provided in the lower operation unit is interlocked with an upper cam provided in the upper operation unit by a single shaft, and that the lower cam and the upper cam are moved upwards and downwards in opposite directions.
    Type: Application
    Filed: November 25, 2009
    Publication date: December 15, 2011
    Inventors: Hyeon-Jung Kim, Jae-Sung Park, Hyeon-Deok Seo, Young-Su Lee