Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5630209 | Emergency call system | Manfred Wizgall, Axel Kuttner | 1997-05-13 |
| 5502586 | Optical network including branch points featuring three interconnected bidirectional optical waveguides having free ends with reflectionless terminations | — | 1996-03-26 |
| 5485504 | Hand-held radiotelephone with video transmission and display | — | 1996-01-16 |
| 5337175 | Optical communications system for the subscriber area with optical amplifiers | Adolf Weygang, Rolf Heidemann | 1994-08-09 |
| 4955014 | Broadband optical communication system, particularly in the subscriber area | Dieter Kuppers, Klaus Herse, Kate Hiepe-Wohlleben, Manfred Kaiser, Friedemann Mohr | 1990-09-04 |
| 4726010 | Optical communication system in the subscriber loop | Amar Ali | 1988-02-16 |
| 4686667 | Broadband integrated subscriber loop system | — | 1987-08-11 |