Patents by Inventor Sung-Yull Lee

Sung-Yull Lee 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: 7255819
    Abstract: Disclosed is a process for producing the baseball or softball for child, for exercise and for toy that has good security characteristics and similar playing characteristics to a conventional game ball. The invention provides the process of manufacturing a game ball wherein products with the same appearance as the conventional baseball can be obtained at a time by injecting, pressing and foaming the material of EVA alone or blend thereof. Thus, the process can decrease a danger of the ball currently used in the Little League greatly and provide a process of producing the game ball for child, exercise and toy that displays the uniform pattern and playing characteristics and has the high productivity.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: August 14, 2007
    Inventor: Sung-Yull Lee
  • Publication number: 20050159258
    Abstract: Disclosed is a process for producing the baseball or softball for child, for exercise and for toy that has good security characteristics and similar playing characteristics to a conventional game ball. The invention provides the process of manufacturing a game ball wherein products with the same appearance as the conventional baseball can be obtained at a time by injecting, pressing and foaming the material of EVA alone or blend thereof. Thus, the process can decrease a danger of the ball currently used in the Little League greatly and provide a process of producing the game ball for child, exercise and toy that displays the uniform pattern and playing characteristics and has the high productivity.
    Type: Application
    Filed: March 16, 2005
    Publication date: July 21, 2005
    Inventor: Sung-Yull Lee