Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5717771 | Programmable hearing aid means worn in the auditory canal | Joseph Sauer, Hans-Joachim Weiss | 1998-02-10 |
| 5654530 | Auditory canal insert for hearing aids | Joseph Sauer | 1997-08-05 |
| 5257315 | Hearing aid to be worn in the ear | Jochen Mueller | 1993-10-26 |
| 5188540 | Hearing aid having electrical contact means arranged in a battery compartment | Jochen Mueller | 1993-02-23 |
| 4987597 | Apparatus for closing openings of a hearing aid or an ear adaptor for hearing aids | — | 1991-01-22 |
| 4953215 | Arrangement to prevent the intrusion of foreign matter into an electro-acoustical transducer | Hans-Joachim Weiss, Juergen Wagner | 1990-08-28 |
| 4840249 | Apparatus for srewing a cover onto a screw neck of a hearing aid | Ulrich Birkholz, Peter Nassler | 1989-06-20 |
| 4834927 | Method and apparatus for producing an ear impression | Ulrich Birkholz, Peter Nassler | 1989-05-30 |
| 4763752 | Mount for a sound transducer, particularly an earphone | Peter Nassler | 1988-08-16 |
| 4716985 | In-the-ear hearing aid | — | 1988-01-05 |
| 4476353 | Hearing aid device to be worn in the ear | — | 1984-10-09 |