Patents by Inventor Hyeon-Yong Park

Hyeon-Yong Park 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).

  • Batting practice machine for baseball
    Patent number: 5788589
    Abstract: The present invention relates to a batting practice machine for baseball which can repeatively practice batting technique to get a feel for push or pull-hitting the ball depending on its location, and satisfy the continuous practice of batting motion by rapidly return the ball to the batting point, as well as effectively preventing the from breakdown due to the impact on batting.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: August 4, 1998
    Assignee: Mun-Koing Koo
    Inventors: Mun-Koing Koo, Hyeon-Yong Park
  • Batting practice machine for baseball
    Patent number: D393029
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: March 31, 1998
    Assignee: Mun-Koing Koo
    Inventors: Mun-Koing Koo, Hyeon-Yong Park