Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 25 - Deaf-aid sets
Patents for H04R 25 - Deaf-aid sets (22,418)
12/1989
12/26/1989US4890330 Hearing aid with interchangeable battery compartment and audio connection
12/26/1989US4890329 Hearing aid comprising printed circuit board
12/19/1989US4888810 Analog volume control circuit
12/13/1989EP0345345A1 Electroacoustic transducer.
12/12/1989US4887299 Adaptive, programmable signal processing hearing aid
11/1989
11/23/1989EP0342782A2 Electroacoustic system with electronic filters
11/21/1989US4882762 Multi-band programmable compression system
11/21/1989US4882761 Low voltage programmable compressor
11/21/1989US4881616 Hearing aid retention apparatus
11/15/1989EP0341997A2 Auditory prosthesis fitting using vectors
11/15/1989EP0341995A2 Calibration device and auditory prosthesis having calibration information
11/15/1989EP0341903A2 Hearing aid programming interface and method
11/15/1989EP0341902A2 Hearing aid programming interface
11/15/1989EP0341292A1 Adaptive, programmable signal processing hearing aid
11/14/1989US4880076 Hearing aid ear piece having disposable compressible polymeric foam sleeve
11/08/1989EP0340594A1 Hearing aid device with wireless remote control
11/07/1989US4879750 Hearing aid with cerumen trapping gap
11/07/1989US4879749 Host controller for programmable digital hearing aid system
11/07/1989US4878560 Earmold
11/02/1989EP0339819A2 Electronic filter
10/1989
10/26/1989DE3834316C1 Hearing aid
10/25/1989EP0338150A1 A method of producing electronic basic blocks with a high degree of compaction and basic blocks produced according to method
10/24/1989US4876499 Differental voltage controlled exponential current source
10/18/1989EP0337195A2 Hearing aid with a housing carried behind the ear
10/04/1989EP0335542A2 Auditory prosthesis with datalogging capability
10/03/1989US4871502 Method for manufacturing an otoplastic
10/03/1989CA1262172A1 Anti-snoring device
09/1989
09/28/1989DE3907839A1 Hearing aid
09/27/1989EP0334837A2 Hearing aid with audio input plug
09/26/1989US4870689 Ear wax barrier for a hearing aid
09/26/1989US4870688 Mass production auditory canal hearing aid
09/26/1989US4869339 Harness for suppression of hearing aid feedback
09/26/1989CA1261959A1 Automatic gain control for hearing aid
09/21/1989WO1989008970A1 Induction loop driving amplifiers
09/20/1989EP0333298A1 A hearing protector and method of manufacturing the same
09/20/1989EP0332938A1 Hearing aid with a spring contact device
09/19/1989US4868880 Method and device for compensating for partial hearing loss
09/19/1989US4868517 Variolosser
09/19/1989US4867267 Hearing aid transducer
09/08/1989WO1989008371A1 Improved low voltage programmable compressor
09/08/1989WO1989008370A1 Hearing aid
09/08/1989WO1989008353A1 Improved multi-band programmable compression system
09/05/1989US4864611 Telephone handset attachment for use in-the-ear hearing aids
08/1989
08/23/1989EP0329383A2 Frequency transposing hearing aid
08/22/1989US4860362 Hearing aid and method for making it
08/15/1989CA1258434A1 Hearing aid
08/10/1989WO1989007366A1 Circuit arrangement with adjustable active and/or passive components
08/10/1989WO1989006988A1 Electrode assembly for cochlear implant
08/09/1989EP0326905A1 Hearing aid signal-processing system
08/08/1989USRE33017 Hearing aid
08/08/1989US4854415 Hearing aid whose components are mounted in a hearing aid housing
08/02/1989EP0326513A2 Hearing aid
08/02/1989EP0326040A2 Microphone with acoustic frequency pre-emphasis
08/01/1989US4852684 Compressible ear tip
07/1989
07/26/1989EP0325107A1 Method for manufacturing an ear mould or ear piece
07/26/1989CN2041872U Telephone hearing aids
07/25/1989US4852177 High fidelity earphone and hearing aid
07/25/1989US4852175 Hearing aid signal-processing system
07/25/1989US4850962 Implantable hearing aid and method of improving hearing
07/12/1989CN1004748B Multifuction electromedical device
07/11/1989US4847763 Laser audiometer system
07/11/1989US4846165 Actinic photopolymerizable composition; dentistry
07/06/1989DE3741180A1 Elektroakustischer wandler An electro-acoustic transducer
07/04/1989US4845757 Circuit for recognizing oscillations in a useful signal due to feedback between acoustic input and output transducers
07/04/1989US4845755 Remote control hearing aid
06/1989
06/29/1989DE3742877A1 Hearing aid
06/27/1989US4843623 Hearing aid devices in which high frequency signal portions are transposed in low frequency compenstion signal portions
06/21/1989EP0321150A2 Collapsible ear tip
06/20/1989US4840249 Apparatus for srewing a cover onto a screw neck of a hearing aid
06/20/1989US4840178 Magnet for installation in the middle ear
06/20/1989CA1256237A1 Substance for the preparation of plastic and/or hard substances for dental-technical, (dental)medical and related purposes, process for its production and the use thereof
06/15/1989WO1989005559A1 Electroacoustic transducer
06/15/1989DE3840393A1 Electroacoustic device to be worn in the ear
06/15/1989DE3744745A1 Electroacoustic transducer
06/07/1989EP0319010A2 Microphone with frequency pre-emphasis
06/06/1989US4837833 Microphone with frequency pre-emphasis channel plate
06/06/1989US4837832 Electronic hearing aid with gain control means for eliminating low frequency noise
06/06/1989US4835833 Method of mounting a potentiometer
05/1989
05/30/1989US4834927 Method and apparatus for producing an ear impression
05/30/1989US4834211 Anchoring element for in-the-ear devices
05/18/1989WO1989004583A1 Adaptive, programmable signal processing hearing aid
05/16/1989US4831655 Hinge for a hearing aid cover
05/16/1989US4830139 Hearing aid holding means and method of using same
05/09/1989US4829270 Compansion system
05/09/1989US4828777 Method and apparatus for the manufacture of an otoplastic shell
05/03/1989DE3835977A1 Hoerhilfe Hearing aid
05/02/1989US4827525 Attachment device for a probe microphone
05/02/1989US4827524 Magnetic attachment apparatus for ear-level microphone
04/1989
04/25/1989US4823795 Signal processor for and an auditory prosthesis having spectral to temporal transformation
04/20/1989DE3733983A1 Method for damping interfering (wind) noise in sound signals transmitted by hearing aids
04/19/1989EP0312517A2 Dispenser for hearing aid wax filter elements
04/12/1989EP0311233A2 Touch contacts for hearing aid volume control
04/12/1989EP0310866A1 Device for closing the apertures of hearing aids or earpieces for hearing aids
04/12/1989EP0310840A1 Hearing aid housing
04/11/1989US4819647 Intracochlear electrode array
04/05/1989EP0309834A1 Hearing aid with battery holder
04/04/1989US4817609 Method for treating hearing deficiencies
04/04/1989US4817607 Magnetic ossicular replacement prosthesis
03/1989
03/30/1989DE3826897A1 Otoplasty for sound transmission
03/28/1989US4815560 Frequency)compensated hearing aid microphone assembly
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