Patents by Inventor Holger Hellenschmidt

Holger Hellenschmidt 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).

  • Subscriber terminal for ISDN networks
    Patent number: 5481598
    Abstract: A subscriber terminal for ISDN networks in the form of an ISDN telephone (11) is equipped with a keyboard (15,16), a display (14) and a connection socket (19) for another applications terminal (21-24), such as a printer and/or a keyboard and/or a computer, a PC for example. An interface is integrated into the ISDN telephone (11) for the cost-effective connection of an applications terminal, with which the ability to communicate between the applications terminal to be connected (21-24) and the ISDN network, can be established.
    Type: Grant
    Filed: October 2, 1992
    Date of Patent: January 2, 1996
    Assignee: Alcatel N.V.
    Inventors: Frank Bergler, Adrian Mauch, Holger Hellenschmidt