Patents by Inventor Cynthia Shu-Yen Hsieh

Cynthia Shu-Yen Hsieh 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).

  • AUTOMATIC LOCAL ACCESS SURROGATE NUMBERS FOR LONG DISTANCE CALLING
    Publication number: 20100227604
    Abstract: A unique call mapping and routing device combines Voice over Internet protocol (VoIP) and public switched telephone network (PSTN) technologies such that mobile device users are able to dial international calls that are automatically and transparently directed through local access numbers using the mobile carrier PSTN network.
    Type: Application
    Filed: March 6, 2010
    Publication date: September 9, 2010
    Inventor: Cynthia Shu-Yen Hsieh