Patents by Inventor R. Paul Christmann

R. Paul Christmann 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 of redirecting a telephone call to an alternate destination
    Patent number: 5369695
    Abstract: A facility is provided for redirecting a call from one destination point in a communications network to another destination point in the event that the call is not answered within a predetermined period of time, or in the event that after the call has been answered, the called party requests such redirection.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: November 29, 1994
    Assignee: AT&T Corp.
    Inventors: Vandana S. Chakravarti, R. Paul Christmann, Steven F. Knittel, Margaret H. Redberg, William T. Shampine, Lindsay A. Shur, Dawn E. Staniforth