Patents by Inventor David C. Herrera

David C. Herrera 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).

  • System and method for blocking a telephone call
    Patent number: 7907715
    Abstract: A system and method are provided for blocking a telephone call from a calling party to a called party, the calling party associated with a calling party directory number, including a local-designated trunk group over which the incoming telephone call from the calling party is received. A service switching point is coupled with the local-designated trunk group, the service switching point receiving the telephone call, generating a query message including the calling party directory number, and sending the query message to a service control point. The service control point is coupled with the service switching point, receives the query message, and determines if the calling party is inter Local Access and Transport Area (interLATA) with respect to the service switching point.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: March 15, 2011
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: John W. Moss, Wayne Heinmiller, Dianna Tiliks, Tyler D. Schroepfer, David C. Herrera