Patents by Inventor Won Il Kwak

Won Il Kwak 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).

  • Dielectric chip antenna structure
    Patent number: 7170456
    Abstract: Disclosed herein is a dielectric chip antenna structure using a metal conductor formed at the lateral side of the antenna along the longitudinal direction of the antenna. The dielectric chip antenna structure forms the metal conductor at the long side of the antenna to induce antenna resonance through coupling effect between the antenna and the ground. Furthermore, the dielectric chip antenna structure minimizes the space occupied by the antenna and modifies the theoretical feeding structures of the reverse F type antenna and monopole antenna to meet user's various demands.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: January 30, 2007
    Assignee: Information and Communications University Research and Industrial Cooperation Group
    Inventors: Won Il Kwak, Seong Ook Park
  • Internal multi-band antenna with multiple layers
    Patent number: 6982675
    Abstract: The present invention is directed to an internal multi-band antenna with multiple layers and which comprises a main radiation patch for forming an upper side of the antenna, one side of the main radiation patch connected to a feeder, the main radiation patch including a plurality of strips in the same plane and formed by a folded slit patch of maze type; and at least one auxiliary radiation patch bent downwardly at one side of an edge of the main radiation patch and formed in parallel to the main radiation patch between the main radiation patch and a feeder ground plane.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: January 3, 2006
    Assignee: Information and Communications University Educational Foundation
    Inventors: Won Il Kwak, Seong Ook Park, Young Hyuk Ko
  • Multi-band cable antenna
    Patent number: 6980172
    Abstract: The present invention is directed to a multi-band cable antenna.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: December 27, 2005
    Assignee: Information and Communications University Educational Foundation
    Inventors: Won Il Kwak, Seong Ook Park
  • Cellular phone
    Patent number: D546810
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: July 17, 2007
    Assignee: LG Electronics Inc.
    Inventor: Won Il Kwak
  • Case for mobile phone
    Patent number: D559532
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: January 15, 2008
    Assignee: LG Electronics Inc.
    Inventors: Won Il Kwak, Hwi Tae Lim
  • Case for mobile phone
    Patent number: D565840
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: April 8, 2008
    Assignee: LG Electronics Inc.
    Inventor: Won Il Kwak
  • Case for mobile phone
    Patent number: D567500
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: April 29, 2008
    Assignee: LG Electronics Inc.
    Inventors: Won Il Kwak, Hwi Tae Lim
  • Cellular phone
    Patent number: D569830
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: May 27, 2008
    Assignee: LG Electronics Inc.
    Inventor: Won Il Kwak