Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6266096 | Digital encoding method and apparatus for replacing part of the data signal with synthetically generated amplitude values | Hartmut Hackmann, Jens Rennert | 2001-07-24 |
| 5438371 | Data transmission method | Siegfried Bohme, Hartmut Hackmann, Leo Warmuth | 1995-08-01 |
| 4779128 | Digital low-pass filter with improved frequency reduction characteristics | Kurt J. Johannes, Detlef Deutschmann, Otto L. Warmuth, Walter Demmer | 1988-10-18 |
| 4570126 | FM Demodulator using interpolation to approximate zero crossings | Walter Demmer, Norbert A. Bergs, Ingolf B. Heinemann, Otto L. Warmuth | 1986-02-11 |
| 4499427 | Digital FM demodulator using a filter having a linearly sloping frequency-amplitude characteristic | Walter Demmer, Jurgen Lenth | 1985-02-12 |