Patents by Inventor Johan Dahlen

Johan Dahlen 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).

  • Telecommunications speech/text conversion and message delivery system
    Patent number: 5870454
    Abstract: An intelligent network telecommunications service allows a calling party (22) to provide a voice message which is converted by the service to a text message. The text message is delivered to any of a plurality of types of media formatters (90), which in turn transmit the text message to corresponding types of receiving equipment (100). The text messages can be delivered to a sole called party or to a distribution list of called parties.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: February 9, 1999
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Johan Dahlen