Patents by Inventor Holly Chan Chen

Holly Chan Chen 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 voice over internet protocol telephony using a virtual private network
    Patent number: 7743411
    Abstract: A system and method are disclosed for extending communications over the Internet by associating a telephone number with, for example a remote virtual private network (VPN) client IP address. A call can be received to the telephone number and an invite signal is provided to the remote VPN client utilizing the IP address. When the VPN client is able, a VPN can be established and the call can be routed to a phone associated with the remote VPN client IP address.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: June 22, 2010
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Goangshiuan Shawn Ying, Eugene L. Edmon, Steve M. Aspell, Holly Chan Chen