Patents by Inventor Anna L. Harrison

Anna L. Harrison 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).

  • Telephone fraud detection and prevention
    Patent number: 6418212
    Abstract: A system and method for detecting and preventing a fraudulent telephone call in telecommunication system is provided. First, a terminating number of a first call and a originating number of a second call are received from a telecommunication network. The terminating number of the first call is compared with the originating number of the second calls which are originated within a predetermined time period from a termination of the first call. After comparison, it is determined whether the first and the second calls are fraudulent telephone call.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: July 9, 2002
    Assignee: MCI WorldCom, Inc.
    Inventors: Anna L. Harrison, Erin C. Jackman, Dean Marchand