Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9930439 | Headphone | Alexander Grimm, Kornelia Kaddig, Christoph Weinreuter, Mirko Hausen | 2018-03-27 |
| 9277039 | Headset and headphone | Axel Schmidt, Jan Peter Kuhtz, Olaf Leske, Christian Grone, Hatem Foudhaili +2 more | 2016-03-01 |
| 8638969 | Earphone, headset and ear pad | Jan Peter Kuhtz, Olaf Leske, Steffi Beier | 2014-01-28 |
| 8559665 | Headset and headphone | Axel Schmidt, Jan Peter Kuhtz, Olaf Leske, Christian Grone, Hatem Foudhaili +2 more | 2013-10-15 |
| 8369557 | Earphone and headset | Jan Peter Kuhtz, Olaf Leske | 2013-02-05 |
| 8249267 | Earphone and headset | Olaf Leske | 2012-08-21 |
| 8204267 | Earphone and headset | Olaf Leske | 2012-06-19 |
| 8194909 | Earphone, headset and ear protector | Jan Peter Kuhtz | 2012-06-05 |
| 6388210 | Operating element for selectively producing electric contacts | — | 2002-05-14 |