Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10141494 | Headset and headphone | Jan Peter Kuhtz, Martin Streitenberger, André Grandt, Elmar Schulze | 2018-11-27 |
| 9373317 | Headset and headphone | Martin Streitenberger, André Grandt | 2016-06-21 |
| 9277039 | Headset and headphone | Axel Schmidt, Jan Peter Kuhtz, Olaf Leske, Olav Nisse, Christian Grone +2 more | 2016-03-01 |
| 9247337 | Headphone and headset | Axel Grell, Martin Streitenberger, Daniel Voss | 2016-01-26 |
| 8634584 | Earphone | Christoph Greger, Guenter Poeppel, Grit Bonin | 2014-01-21 |
| 8559665 | Headset and headphone | Axel Schmidt, Jan Peter Kuhtz, Olaf Leske, Olav Nisse, Christian Grone +2 more | 2013-10-15 |