Patents by Inventor Hwang-kyun Lee

Hwang-kyun Lee 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).

  • Method and apparatus for changing a sound source of a supplementary service using a ring back tone on calling
    Patent number: 7509149
    Abstract: The disclosed technology relates to changing and pushing a sound source of a supplementary service using a ring back tone on calling. The first embodiment relates to a method and apparatus for changing a sound source of supplementary service using a ring back tone on calling. The second embodiment relates to a method and apparatus for pushing a sound source of a supplement service of a calling party to that of a called party on calling.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: March 24, 2009
    Assignee: Ktfreetel Co., Ltd.
    Inventors: Jae-wook Shim, Hwang-kyun Lee, Hee-jung Ahn, Gil-soo Lee
  • Method and apparatus for changing a sound source of a supplementary service using a ring back tone on calling
    Publication number: 20060109970
    Abstract: The disclosed technology relates to changing and pushing a sound source of a supplementary service using a ring back tone on calling. The first embodiment relates to a method and apparatus for changing a sound source of supplementary service using a ring back tone on calling. The second embodiment relates to a method and apparatus for pushing a sound source of a supplement service of a calling party to that of a called party on calling.
    Type: Application
    Filed: December 9, 2005
    Publication date: May 25, 2006
    Inventors: Jae-wook Shim, Hwang-kyun Lee, Hee-jung Ahn, Gil-soo Lee