Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11587543 | Calibration of active noise-cancelling headphones | Michael Perkmann, Ludwig Kollenz | 2023-02-21 |
| 11115749 | In-ear active noise-cancelling earphone | Michael Perkmann | 2021-09-07 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11587543 | Calibration of active noise-cancelling headphones | Michael Perkmann, Ludwig Kollenz | 2023-02-21 |
| 11115749 | In-ear active noise-cancelling earphone | Michael Perkmann | 2021-09-07 |