Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7352776 | Line terminator unit for a subscriber line | Joerg Hauptmann, Paul Kunisch, Gerald Krottendorfer, Manfred Preitnegger, Rudi Frenzel +2 more | 2008-04-01 |
| 7286952 | Method for testing subscriber access lines | Svend Christensen, Ludwig Dirscherl, Ulrich Liefländer, Franz Schmoller | 2007-10-23 |
| 6973180 | Method for processing telephone signals supplied by an analog telephone terminal and data supplied by a data terminal | Paul Kunisch | 2005-12-06 |
| 6826415 | System for a mobile radio system having a base station and an antenna device | Leo Rademacher, Mohamed Shaalan | 2004-11-30 |
| 6236719 | Arrangement for data transmission utilizing telephone network | Thomas Ahrndt, Stephan Binde, Martin Braun, Ira Hilscher, Karl Kloppe | 2001-05-22 |
| 6108414 | Circuit arrangement for the subscriber-remote termination of a subscriber line in the form of a two-lead copper line for the transmission of high bit rate data signals in addition to analog telephone signals | Thomas Ahrndt, Stephan Binde, Martin Braun, Ira Hilscher, Karl Kloppe | 2000-08-22 |
| 5493913 | Power-impact or pulse screwing method | August Layer, Bernd Grammer, Heinz Veitinger | 1996-02-27 |
| 5202882 | Method for checking transmission properties of a subscriber line circuit | — | 1993-04-13 |
| 5099498 | Method for suppressing quantization noises superimposed on a sinusoidal audible tone transmitted in a digital telecommunications exchange system | Werner Nagler, Monika Stadler | 1992-03-24 |
| 4916734 | Apparatus for separating dc current and ac current components of a composite signal | Harald Stader | 1990-04-10 |
| 4896351 | Apparatus for separating dc current and ac current components of a composite signal | Harald Stader | 1990-01-23 |
| 4893309 | Digital interface between at least two subscriber line interface circuits and a processing unit | Robert Lechner, Harald Stader, Norbert Wingerath, Christopher C. A. Priest, Nigel P. Dyer +7 more | 1990-01-09 |
| 4881226 | Digital interface of an integrated subscriber line interface circuit | Robert Lechner, Harald Stader, Norbert Wingerath, Christopher C. A. Priest, Nigel P. Dyer +7 more | 1989-11-14 |
| 4858226 | Method for the operation of an interface circuit between a central portion and local portions of a subscriber termination module of a digital time multiplex telecommunications network | Harald Stader, Norbert Wingerath, Robert Lechner | 1989-08-15 |
| 4720845 | Protective circuit for the overvoltage protection of a subscriber line interconnect circuit | Robert Lechner, Roland Krimmer | 1988-01-19 |
| 4715058 | Protective circuit for the overvoltage protection of a subscriber line interconnect circuit | Robert Lechner, Roland Krimmer | 1987-12-22 |