Patents by Inventor Frank Y. Liao

Frank Y. Liao 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).

  • Patent number: 5590186
    Abstract: Calls made to a toll-free 800 service subscriber are routed to a subscriber's primary location via a telephone network switch operating in conjunction with a specially configured adjunct processor. The adjunct processor routes the call from the calling party to the primary location through a first call leg extending between the calling party, switch and adjunct processor. A second call leg is extended from the adjunct processor, through the switch to an alternate destination. The first and second call legs are bridged within the adjunct processor for completing the call from the calling party to the alternate location. After the called is bridged, the two call legs are released to and from the adjunct processor while merging the two legs within the switch so as to conserve adjunct processor resources for further incoming calls.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: December 31, 1996
    Assignee: AT & T
    Inventors: Frank Y. Liao, Antoinette Rule, Rise J. Frankel, Thomas W. Blickle, Sandra L. Bish