Patents by Inventor Seung Seog Hong

Seung Seog Hong 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).

  • Trackball for a portable computer
    Patent number: 6091404
    Abstract: The present invention relates to a trackball for a portable computer, which can be operated when not only is a trackball mounted on the main body of the portable computer, but is also detached from the main body of the computer.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: July 18, 2000
    Inventors: Seung Seog Hong, Jae Myon Kim, Sang Cheon Hyun