Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864248 | Amplifier arrangement with controllable gain | — | 1989-09-05 |
| 4669119 | FM stereo receiver | Wolfgang Nolde | 1987-05-26 |
| 4616186 | FM quadrature demodulator with distortion compensation | Wilfried Knop, Hermann Jabs | 1986-10-07 |