Patents by Inventor Hee-jung Ahn

Hee-jung Ahn 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 for circulating an electronic gift certificate in online and offline system
    Patent number: 7580864
    Abstract: Disclosed is an electronic gift certificate circulating method for a gift certificate service system including a gift certificate database and a gift certificate service server to manage sales of the electronic gift certificates according to requests by a communication terminal through wired and wireless networks, comprising: receiving a user's purchase request from the communication terminal; checking a settlement state of the electronic gift certificate bought by the user; settling the electronic gift certificate bought by the user, and issuing the bought electronic gift certificate to the user, when the user requests settlement; storing the issued gift certificate information in the gift certificate database; and notifying the user of the gift certificate purchase particulars in a message format.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: August 25, 2009
    Assignee: KTFreetel Co., Ltd.
    Inventor: Hee-Jung Ahn
  • 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
  • Method for circulating an electronic gift certificate in online and offline system
    Publication number: 20050273392
    Abstract: Disclosed is an electronic gift certificate circulating method for a gift certificate service system including a gift certificate database and a gift certificate service server to manage sales of the electronic gift certificates according to requests by a communication terminal through wired and wireless networks, comprising: receiving a user's purchase request from the communication terminal; checking a settlement state of the electronic gift certificate bought by the user; settling the electronic gift certificate bought by the user, and issuing the bought electronic gift certificate to the user, when the user requests settlement; storing the issued gift certificate information in the gift certificate database; and notifying the user of the gift certificate purchase particulars in a
    Type: Application
    Filed: September 18, 2003
    Publication date: December 8, 2005
    Applicant: KTFreetel Co., Ltd.
    Inventor: Hee-Jung Ahn