Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10141494 | Headset and headphone | Jan Peter Kuhtz, Martin Streitenberger, Elmar Schulze, Hatem Foudhaili | 2018-11-27 |
| 9900683 | Headphones | Elmar Stein (né Schulze) | 2018-02-20 |
| 9781501 | Earpiece and headset | Elmar Stein | 2017-10-03 |
| 9373317 | Headset and headphone | Martin Streitenberger, Hatem Foudhaili | 2016-06-21 |
| 8391530 | Helmet and apparatus for active noise suppression | Manfred Kurbis | 2013-03-05 |
| 8243942 | Headphones for connection to an external active noise compensation device | — | 2012-08-14 |
| 8180092 | Converter system for an active noise compensation apparatus | Axel Grell | 2012-05-15 |