Patents by Inventor Yong Duk Cha

Yong Duk Cha 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).

  • Hinge unit and mobile terminal having the same
    Patent number: 7640044
    Abstract: A mobile terminal comprising: a first body; a second body mounted in the first body to be folded and unfolded; and hinge units for rotatably hinge-connecting the first and second bodies, wherein the hinge units comprise: a first hinge unit mounted in the first body; a second hinge unit mounted in the second body, and rotatably engaged with the first hinge unit to have the same rotation angle as that of the first hinge unit; and a connection unit for rotatably connecting the first hinge unit to the second hinge unit, whereby the first body can be rotated up to 360° with respect to the second body so that videos and satellite broadcasting can be viewed more conveniently.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: December 29, 2009
    Assignee: LG Electronics Inc.
    Inventors: Chang-Bai Won, Sang-Ho Han, Hong-Kyu Park, Yong-Duk Cha
  • Hinge unit and mobile terminal having the same
    Publication number: 20060197861
    Abstract: A mobile terminal comprising: a first body; a second body mounted in the first body to be folded and unfolded; and hinge units for rotatably hinge-connecting the first and second bodies, wherein the hinge units comprise: a first hinge unit mounted in the first body; a second hinge unit mounted in the second body, and rotatably engaged with the first hinge unit to have the same rotation angle as that of the first hinge unit; and a connection unit for rotatably connecting the first hinge unit to the second hinge unit, whereby the first body can be rotated up to 360° with respect to the second body so that videos and satellite broadcasting can be viewed more conveniently.
    Type: Application
    Filed: December 8, 2005
    Publication date: September 7, 2006
    Inventors: Chang-Bai Won, Sang-Ho Han, Hong-Kyu Park, Yong-Duk Cha
  • Mobile phone
    Patent number: D558716
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: January 1, 2008
    Assignee: LG Electronics Inc.
    Inventors: Min Sung Bae, Yong Duk Cha
  • Mobile phone
    Patent number: D625284
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: October 12, 2010
    Assignee: LG Electronics Inc.
    Inventor: Yong Duk Cha