Patents by Inventor Dan M. Lofgren

Dan M. Lofgren 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: 5588044
    Abstract: A telephony voice response system includes a database language sequencer, a database control module having a plurality of procedures callable by the database language for performing database operations, and a telephony control module having a plurality of procedures callable by the database language sequencer for performing telephony operations. The telephony operations can include speaking a predefined prompt onto a telephony channel, receiving and storing DTMF-encoded input from the telephony channel, and recording audio input from the telephony channel. The database language sequencer calls the database control module procedures and the telephony control module procedures in a sequence defined by a program prepared according to a database language. The telephony voice response system can control multiple telephony channels by running a separate task for each such channel under a multitasking operating system.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: December 24, 1996
    Assignee: Voysys Corporation
    Inventors: Dan M. Lofgren, William A. Dietrich