Patents by Inventor Won Chul Chung

Won Chul Chung 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 providing number portability of mobile phone
    Patent number: 6738633
    Abstract: The present invention is directed to a method for providing a service provider number portability of a mobile phone number in which it is possible to change a mobile phone service provider without changing a mobile directory number (MDN) in a communication environment where the phone service providers use different intelligent network protocols. In the present invention, the intelligent network calls which uses different protocols are processed using a number portability database which supports the multi-protocols in order to change the service provider between the mobile phone service providers in which the mobile phone subscribers use different intelligent protocols.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: May 18, 2004
    Assignee: Korea Telecommunication Authority
    Inventors: Jin Yeon Kim, Won Chul Chung, Chung Il Kim
  • Method for providing number portability of mobile phone
    Publication number: 20020052211
    Abstract: The present invention is directed to a method for providing a service provider number portability of a mobile phone number in which it is possible to change a mobile phone service provider without changing a mobile directory number (MDN) in a communication environment where the phone service providers use different intelligent network protocols. In the present invention, the intelligent network calls which uses different protocols are processed using a number portability database which supports the multi-protocols in order to change the service provider between the mobile phone service providers in which the mobile phone subscribers use different intelligent protocols.
    Type: Application
    Filed: December 12, 2000
    Publication date: May 2, 2002
    Inventors: Jin Yeon Kim, Won Chul Chung, Chung Il Kim