Patents by Inventor Bruce E. Rotvold

Bruce E. Rotvold 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 processing dropped calls
    Patent number: 5995830
    Abstract: A method and apparatus for processing dropped calls. If, during an established call between two communication devices, a telecommunication network node determines that a communication link to one of the devices has been dropped, the node determines the cause of the dropped communication link and sends a status message to the non-dropped communication device. If a reconnection attempt is appropriate, the node attempts to reconnect to the dropped device. If a reconnection attempt is not appropriate, or if the reconnection attempt is unsuccessful, the non-dropped communication device is connected to a voice mail node. If the reconnection attempt is successful, the call between the two communication devices is re-established.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: November 30, 1999
    Assignee: AT&T Wireless Services Inc.
    Inventors: Umesh J. Amin, Bruce E. Rotvold