Patents by Inventor Louis J. Francz

Louis J. Francz 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).

  • Automated call filter
    Patent number: 4852149
    Abstract: A Call Filter System (CFS): (1) logically interfaces between a public telephone network and business customer premises equipment; (2) automatically processes incoming and outgoing calls which are amenable to such intervention; and (3) enlists the aid of human intervention on calls requiring such intervention.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: July 25, 1989
    Assignee: Dialogic Corporation
    Inventors: Nicholas Zwick, Charles R. Walden Jr., Louis J. Francz, Jay L. Gerbehy