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| Number | Title | Issue Date |
| 6181801 | Wired open ear canal earpiece A communications earpiece is disclosed which can be used by hearing impaired and non-hearing impaired users so as to be able to communicate with an external device such as personal communications nodes or cellular phones. A communications earpiece compris... | 01/30/2001 |
| 6154546 | Probe microphone Real ear measurements for a digital hearing aid (DHA) fitting are effected using a probe microphone which senses sound from within the patient's ear. The sound, which is conveyed to the probe microphone using a probe tube, is converted to electrical signa... | 11/28/2000 |
| 6144748 | Standard-compatible, power efficient digital audio interface A method and apparatus provided for interfacing a hearing device and an auxiliary device to achieve a wireless communications link between the hearing device and a remote device. The hearing device has a case including an external connector defining signa... | 11/07/2000 |
| 6021207 | Wireless open ear canal earpiece A communications earpiece is disclosed which can be used by hearing impaired and non-hearing impaired users so as to be able to communicate with an external device such as personal communications node or cellular phone via a wireless link. A communication... | 02/01/2000 |
| 6009183 | Ambidextrous sound delivery tube system A sound delivery system such as a hearing aid, a telephone headset, a multimedia headset, or other communications device is capable of being used on either the left or right ear of the user. The sound delivery system includes an integral case and ear hook... | 12/28/1999 |
| 6000492 | Cerumen block for sound delivery system An earpiece for a sound delivery system has a sound output port for delivering sound into the ear canal of the user. A cerumen block is provided to prevent cerumen or earwax from blocking the sound output port of the earpiece. The cerumen block is formed ... | 12/14/1999 |
| 5781637 | Method for fabricating a hearing aid faceplate and a faceplate produced thereby A method for forming a standardized faceplate for an individually adapted in-the-ear hearing aid shell which matches the physical characteristics of the hearing aid user's ear, and for fabricating an individually-adapted in-the-ear hearing aid shell made ... | 07/14/1998 |
| 5425104 | Inconspicuous communication method utilizing remote electromagnetic drive An inconspicuous hearing system is described that uses a coil to electromagnetically couple with, and therefore drive, a permanent magnet attached to the tympanic membrane or ossicular chain. This hearing system enables hearing impaired individuals, as we... | 06/13/1995 |
| 5278912 | Multiband programmable compression system An improved audio compressor of the type which is useful in a hearing aid and having a programmable compression ratio is disclosed. In the preferred embodiment, the compressor is used in a hearing aid device of the type which comprises a bandsplit filter ... | 01/11/1994 |
| 5276910 | Energy recovering hearing system The present invention comprises a hearing system apparatus and method for electromagnetically communicating signals to a magnetic transducer. The apparatus includes a signalling circuit for producing a pulse-width modulated current signal. An antenna mean... | 01/04/1994 |
| 5259032 | contact transducer assembly for hearing devices A contact transducer assembly for an electromagnetically driven hearing device such as a hearing aid or other audio signal reproducing device worn by a user is described. The contact transducer assembly includes a transducer which is attached to a biocomp... | 11/02/1993 |
| 5003608 | Apparatus and method for manipulating devices in orifices The present invention comprises an apparatus and method for inserting into, orienting within, and withdrawing from an ear a hearing aid, earphone, transducer, microprocessor, radio, sensor, or other mechanical or electronic device. The apparatus includes ... | 03/26/1991 |
| 4975654 | Data signal discrimination method and apparatus A method and apparatus for discriminating the data signal of a transmitter means. Binary encoded data is transmitted between a transmitter means and a receiver means in an amplitude modulated signal varying about a threshold level. A means and method are ... | 12/04/1990 |
| 4882761 | Low voltage programmable compressor A programmable low voltage compressor circuit suitable for use with hearing aids is described. The compressor has a continuously variable compression ratio wherein the gain of the compressor may be programmably controlled over a wide range and the compres... | 11/21/1989 |
| 4882762 | Multi-band programmable compression system A programmable low voltage multi-band compression system suitable for use with hearing aids is described. Received audio signals are processed by a band split filter which separates the received audio signal into a plurality of frequency bands. A pluralit... | 11/21/1989 |
| 4868517 | Variolosser An improved variable gain circuit is described having an input for an audio signal and an output for an audio signal. An operational amplifier having inverting and non-inverting inputs and an output has its input connected to the audio input. The first di... | 09/19/1989 |
