Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6674219 | Piezoelectric speaker | Andrei Szilagyi | 2004-01-06 |
| 6396197 | Piezoelectric speaker | Andrei Szilagyi | 2002-05-28 |
| 5780958 | Piezoelectric vibrating device | Andrei Szilagyi | 1998-07-14 |
| 5736808 | Piezoelectric speaker | Andrei Szilagyi | 1998-04-07 |
| 5539262 | Axially focused radial magnet voice coil actuator | — | 1996-07-23 |
| 4596158 | Tuned gyroscope with dynamic absorber | — | 1986-06-24 |