| Patents for H04R 25 - Deaf-aid sets (22,418) |
|---|
| 09/18/1990 | CA1274184A1 Modular hearing aid with lid hinged to faceplate |
| 09/12/1990 | CN2062140U Talking type hearing aid |
| 09/11/1990 | US4956868 Magnetically shielded electromagnetic acoustic transducer |
| 09/11/1990 | US4956867 Adaptive beamforming for noise reduction |
| 09/11/1990 | US4955729 Hearing aid which cuts on/off during removal and attachment to the user |
| 09/07/1990 | WO1990010363A2 Power efficient hearing aid |
| 09/07/1990 | WO1990009760A1 Apparatus and a method for fitting a hearing aid |
| 09/05/1990 | CN1045211A Hearing aid without ear to hear |
| 08/28/1990 | US4953216 Apparatus for the transmission of speech |
| 08/28/1990 | US4953215 Arrangement to prevent the intrusion of foreign matter into an electro-acoustical transducer |
| 08/28/1990 | US4953112 Method and apparatus for determining acoustic parameters of an auditory prosthesis using software model |
| 08/28/1990 | US4952867 Base bias current compensator |
| 08/21/1990 | CA1273097A1 Hearing aid noise suppression system |
| 08/16/1990 | EP0382675A1 FM receiver and communication systems including same |
| 08/14/1990 | US4948988 Power supply control for low voltage I2 L circuits |
| 08/08/1990 | EP0381608A2 Method and apparatus for the fitting of a hearing aid, and associated probe |
| 08/08/1990 | EP0380819A1 Circuit with controllable active and/or passive elements |
| 08/08/1990 | EP0199734B1 Removal handle for in-the-ear hearing aid |
| 08/07/1990 | US4947439 Hearing aid comprising a contact spring arrangement |
| 08/07/1990 | US4947433 Circuit for use in programmable hearing aids |
| 08/07/1990 | US4947432 Programmable hearing aid |
| 07/31/1990 | US4945569 Hearing aid |
| 07/26/1990 | WO1990008448A1 Remote-controlled, programmable hearing aid system |
| 07/25/1990 | EP0378579A1 Method and apparatus for treating hearing deficiencies |
| 07/11/1990 | EP0377547A1 Opto-electronic prosthesis for the rehabilitation of the neuromotorically or neurosensorially handicapped using at least one light source and optical fibres for the stimulation of nerves or tissues, and process to use it |
| 07/11/1990 | EP0377074A2 Hearing aid transducer |
| 07/10/1990 | US4941180 Hearing aid with a contact spring configuration |
| 07/10/1990 | US4941179 Method for the regulation of a hearing aid, a hearing aid and the use thereof |
| 07/05/1990 | DE3844221A1 Tinnitus masker |
| 06/28/1990 | WO1990007251A1 Tinnitus masker |
| 06/28/1990 | WO1990007231A1 Improved variolosser |
| 06/26/1990 | US4937876 In-the-ear hearing aid |
| 06/26/1990 | US4936305 Shielded magnetic assembly for use with a hearing aid |
| 06/19/1990 | US4934770 Electronic compression system |
| 06/13/1990 | EP0219025B1 Hearing aid |
| 06/12/1990 | US4932405 System of stimulating at least one nerve and/or muscle fibre |
| 06/05/1990 | US4931795 Digital to analog signal converter |
| 06/05/1990 | US4931369 Contact arrangement for the battery of an in-ear hearing aid |
| 05/31/1990 | DE3840190A1 Hearing aid to be worn behind the ear |
| 05/23/1990 | EP0369624A2 Trans-tympanic connector for magnetic induction hearing aid |
| 05/23/1990 | DE3839084A1 Communications ear insert |
| 05/23/1990 | CN2057550U Changeable frequency type hearing aid for training pronunciation of deaf person |
| 05/17/1990 | WO1990005437A1 Adaptive, programmable signal processing and filtering for hearing aids |
| 05/17/1990 | WO1990005436A1 Feedback suppression in digital signal processing hearing aids |
| 05/16/1990 | EP0368125A2 Hearing aid |
| 05/16/1990 | CA2001577A1 Trans-tympanic connector for magnetic induction hearing aid |
| 05/15/1990 | US4926139 Electronic frequency filter |
| 05/10/1990 | DE3837476A1 Method for producing an otoplasty |
| 05/09/1990 | EP0366846A1 Wholly aromatic polyester composition and use thereof |
| 05/08/1990 | CA1268826A1 Output amplifier |
| 05/01/1990 | US4922540 Hearing aid comprising a printed circuit film |
| 05/01/1990 | US4922131 Differential voltage threshold detector |
| 04/25/1990 | EP0365378A1 Electronic apparatus for processing a sound signal |
| 04/25/1990 | EP0365073A1 In-the-ear hearing aid |
| 04/24/1990 | US4920570 Modular assistive listening system |
| 04/24/1990 | US4918757 Hearing aid headband support |
| 04/18/1990 | EP0364037A1 Antihowling hearing aid |
| 04/18/1990 | EP0363783A2 Programming apparatus for hearing aids and for hearing aid components |
| 04/18/1990 | EP0363715A2 Integrated-voltage multiplier circuit for a low-voltage power supply |
| 04/18/1990 | EP0363714A2 Integrated compression amplifier with a programmable threshold |
| 04/18/1990 | EP0363609A1 Digital programming attachment for hearing aids |
| 04/17/1990 | US4918745 Multi-channel cochlear implant system |
| 04/17/1990 | US4918737 Hearing aid with wireless remote control |
| 04/17/1990 | US4918736 Remote control system for hearing aids |
| 04/17/1990 | US4917504 Communications headset |
| 04/10/1990 | CA1267511A1 Method and apparatus for producing an ear impression and for further processing of the ear impression into an otoplastic shell |
| 04/04/1990 | EP0362189A2 Battery space with a contact arrangement |
| 04/04/1990 | EP0361594A1 In-the-ear hearing aid |
| 04/04/1990 | EP0360795A1 Electrode assembly for cochlear implant |
| 04/03/1990 | US4913259 Compressible ear tip |
| 03/29/1990 | DE3927765A1 Hearing aid system - has feedback loop to control variable filter to reduce effect of noise |
| 03/27/1990 | US4912769 Hearing aid comprising a printed circuit board and hearing coil |
| 03/27/1990 | US4912393 Voltage regulator with variable reference outputs for a hearing aid |
| 03/22/1990 | WO1990003089A1 Apparatus and method for conveying amplified sound to ear |
| 03/14/1990 | CN2054604U Pocket-size hearing aid radio |
| 03/13/1990 | US4908869 For addressing hearing-impaired persons within an audience |
| 03/08/1990 | WO1990002471A1 Cerumen trap for hearing aids |
| 03/07/1990 | EP0357212A2 Artificial neural device |
| 02/28/1990 | CN2053828U Bionic hearing aid |
| 02/27/1990 | US4904233 Arrangement in a hearing aid device |
| 02/27/1990 | US4904078 Eyeglass frame with electroacoustic device for the enhancement of sound intelligibility |
| 02/21/1990 | EP0354955A1 Improved multi-band programmable compression system. |
| 02/20/1990 | US4901391 Hearing aid canal cleaning apparatus |
| 02/14/1990 | EP0354698A2 Hearing aid employing a viscoelastic material to adhere components to the casing |
| 02/13/1990 | US4901357 Electromagnetic transducer |
| 02/13/1990 | US4901353 Auditory prosthesis fitting using vectors |
| 02/13/1990 | US4901030 Operational amplifier stages |
| 02/08/1990 | DE3826294A1 Hands-free device for communications systems |
| 01/31/1990 | EP0352954A2 Shielded magnetic assembly for use with a hearing aid |
| 01/24/1990 | EP0351461A1 Bone conduction audio listening device and method |
| 01/23/1990 | US4895519 Audio-frequency converter apparatus, installation including said apparatus for treating subjects suffering from audio-phonatory and auditive-verbal disorders, and a method of using such an installation |
| 01/10/1990 | EP0349835A1 Hearing aid |
| 01/10/1990 | EP0349599A1 Paradoxical hearing aid. |
| 01/10/1990 | CN2050695U Memory strengthening pencil boxes |
| 01/10/1990 | CN1006361B Auditory stimulation using cw and pulsed signals |
| 01/03/1990 | CN2050667U Miniature radio or hearing aid being suspended in or linked with glasses frame |
| 01/02/1990 | CA1264194A1 Hearing aid and method of manufacture thereof |
| 12/28/1989 | WO1989012432A1 Active noise reduction system |
| 12/28/1989 | DE3920028A1 Two-channel hearing aid with automatic game control of low signals |
| 12/28/1989 | DE3915239A1 Decorative earring |