Patents by Inventor Kyung Deok Choi

Kyung Deok Choi 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).

  • Chair for keeping a straight posture
    Patent number: 5806929
    Abstract: The chair of the present invention includes a pair of squeezing members operatively attached to the pair of arm rests whereby when the user sits on the chair, the thighs and the pelvis of the user can be smoothly squeezed by operating the pair of squeezing members for keeping a straight posture of the user.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: September 15, 1998
    Inventor: Kyung Deok Choi