Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7929721 | Hearing aid with directional microphone system, and method for operating a hearing aid | Hartmut Ritter | 2011-04-19 |
| 7324649 | Hearing aid device, comprising a directional microphone system and a method for operating a hearing aid device | Hartmut Ritter | 2008-01-29 |
| 6882736 | Method for operating a hearing aid or hearing aid system, and a hearing aid and hearing aid system | Thomas Dickel | 2005-04-19 |
| 6628794 | Method and apparatus for level limitation in a digital hearing aid | Thomas Dickel, Hartmut Ritter | 2003-09-30 |