Patents by Inventor In-Sik Ra

In-Sik Ra 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).

  • Internet phone system and internet phone service method for a mobile telephone
    Publication number: 20040116108
    Abstract: An Internet phone system and an Internet phone service method can connect a conventional wire telephone to a mobile communication network not via PSTN but via the Internet. The system includes a telephone; a connection converting apparatus for connecting the telephone to either the Internet or a PSTN; a user's computer in which software is installed for connecting the telephone to the Internet through the connection converting apparatus; a VoIP gateway for connecting a mobile communication network to the Internet; and a mobile telephone for accessing the Internet.
    Type: Application
    Filed: October 22, 2003
    Publication date: June 17, 2004
    Inventor: In-Sik Ra