Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D661648 | Apparatus for generating, distributing or converting electrical energy | — | 2012-06-12 |
| 6782110 | Method and digital hearing device for detecting and/or removing errors arising in the transmission and storage of data | Ullrich Sigwanz | 2004-08-24 |
| 6768801 | Hearing aid having improved speech intelligibility due to frequency-selective signal processing, and method for operating same | Frank Wagner | 2004-07-27 |
| 6671643 | Method for testing a hearing aid, and hearing aid operable according to the method | Manfred Kachler | 2003-12-30 |
| 6539096 | Method for producing a variable directional microphone characteristic and digital hearing aid operating according to the method | Ullrich Sigwanz | 2003-03-25 |
| 6385323 | Hearing aid with automatic microphone balancing and method for operating a hearing aid with automatic microphone balancing | — | 2002-05-07 |
| 6366677 | Method and digital hearing device for detecting and processing non-synchronous processes in a digital hearing device | Ullrich Sigwanz | 2002-04-02 |
| 6049617 | Method and circuit for gain control in digital hearing aids | Ullrich Sigwanz | 2000-04-11 |
| 6047074 | Programmable hearing aid operable in a mode for tinnitus therapy | Ullrich Sigwanz, Inga Holube, Raimund Martin | 2000-04-04 |
| 5838806 | Method and circuit for processing data, particularly signal data in a digital programmable hearing aid | Ullrich Sigwanz | 1998-11-17 |