Patents by Inventor Sung Dae Hyun

Sung Dae Hyun 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).

  • Forging die apparatus
    Patent number: 9943902
    Abstract: A forging die apparatus includes: an upper mold holder installed to be movable in a vertical direction, an upper mold detachably installed in the upper mold holder, a lower mold holder installed to be movable in the vertical direction, a lower mold detachably installed in the lower mold holder, and a stopper unit detachably installed in one of the upper mold holder and the lower mold holder to selectively restrain the vertical movement of the one of the upper mold holder and the lower mold holder in which the stopper unit is installed.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: April 17, 2018
    Assignee: Hyundai Motor Company
    Inventors: Sung Dae Hyun, Jae Hyung Kwon
  • FORGING DIE APPARATUS
    Publication number: 20170100768
    Abstract: A forging die apparatus includes: an upper mold holder installed to be movable in a vertical direction, an upper mold detachably installed in the upper mold holder, a lower mold holder installed to be movable in the vertical direction, a lower mold detachably installed in the lower mold holder, and a stopper unit detachably installed in one of the upper mold holder and the lower mold holder to selectively restrain the vertical movement of the one of the upper mold holder and the lower mold holder in which the stopper unit is installed.
    Type: Application
    Filed: June 14, 2016
    Publication date: April 13, 2017
    Inventors: Sung Dae Hyun, Jae Hyung Kwon