Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6091809 | Method of establishing a connection, as well as exchanges and a service control unit | Uwe Stahl | 2000-07-18 |
| 6067356 | Method of routing emergency calls | Hartmut Weik, Lothar Krank, Uwe Stahl | 2000-05-23 |
| 6041110 | Method and apparatus for providing a telecommunications service | Uwe Stahl | 2000-03-21 |
| 6002755 | Method for providing call-charge information as well as call-charge device, subscriber terminal and service unit | Lothar Krank, Uwe Stahl, Hartmut Weik | 1999-12-14 |
| 5991375 | Method of operating a communications network as well as a communications network and an interworking facility | Uwe Stahl | 1999-11-23 |
| 5943320 | Method of charging for the use of a telecommunications service, as well as a switching system, a service control point, and a network management facility | Hartmut Weik, Uwe Stahl, Lothar Krank, Rudiger Falkner | 1999-08-24 |
| 5748710 | Method, network, system and devices for central management of spoken announcements for download on demand | — | 1998-05-05 |
| 5490212 | Call-routing method for a virtual private network as well as service computer and exchange therefor | — | 1996-02-06 |