Patents by Inventor Do-Sung Park

Do-Sung 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).

  • Twist-type mobile terminal and hinge device thereof
    Patent number: 7512428
    Abstract: A twist-type mobile terminal includes a lower housing portion having a key pad; an upper housing portion having a display unit; and a hinge device for twist-rotating the upper housing portion while the lower housing portion and upper housing portion are folded and unfolded.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: March 31, 2009
    Assignee: Pantech & Curitel Communications, Inc.
    Inventors: Ki-Chul An, Byoung-Gon Lee, Do-Sung Park
  • Twist-type mobile terminal and hinge device thereof
    Publication number: 20050064919
    Abstract: A twist-type mobile terminal includes a lower housing portion having a key pad; an upper housing portion having a display unit; and a hinge device for twist-rotating the upper housing portion while the lower housing portion and upper housing portion are folded and unfolded.
    Type: Application
    Filed: March 3, 2004
    Publication date: March 24, 2005
    Inventors: Ki-Chul An, Byoung-Gon Lee, Do-Sung Park