| Patents for H04R 25 - Deaf-aid sets (22,418) |
|---|
| 02/09/1982 | US4315111 Hearing aid with remote momentary shut off switch |
| 01/19/1982 | US4311206 Hearing aid ear mold with improved discrimination |
| 01/06/1982 | EP0042904A1 Hearing aid |
| 12/29/1981 | CA1115352A1 Electrode assembly for inner ear |
| 11/25/1981 | EP0040259A1 Vented ear tip for hearing aid and adapter coupler therefor |
| 10/27/1981 | US4296829 Hook-shaped part of a behind-the-ear hearing aid |
| 10/13/1981 | US4295088 Temperature-sensitive voltage divider |
| 09/22/1981 | US4291203 Hearing aid device |
| 09/15/1981 | US4289935 Method for generating acoustical voice signals for persons extremely hard of hearing and a device for implementing this method |
| 09/08/1981 | US4287616 Auditory ossicle prosthesis |
| 08/25/1981 | US4286177 Integrated injection logic circuits |
| 08/25/1981 | US4286122 Acoustic electrical conversion device with at least one capacitor electret element connected to an electronic circuit |
| 08/18/1981 | US4284856 Multi-frequency system and method for enhancing auditory stimulation and the like |
| 08/18/1981 | US4284085 Electrode for implantation into the cochlea (II) |
| 08/18/1981 | CA1107355A1 Amplifier arrangement for acoustic signals, provided with means for suppressing (undesired)spurious signals |
| 07/07/1981 | US4276781 Method of and arrangement for adapting a hearing aid |
| 06/10/1981 | EP0030219A1 A frequency-matched signal device for persons with impaired hearing |
| 06/09/1981 | US4272654 Acoustic transducer of improved construction |
| 06/09/1981 | US4272591 Electronic apparatus with battery chamber |
| 06/02/1981 | US4271331 Analog processing system for real-time conversion of the frequency of analog signals |
| 05/27/1981 | EP0029048A1 Speech processor. |
| 05/05/1981 | CA1100618A1 Wireless hearing aid |
| 04/29/1981 | EP0027496A1 Hearing aid device with a conductor plate acting as a carrier for conducting strips, and electrical and mechanical component parts and stages |
| 04/14/1981 | US4261372 Electrode for implantation into cochlea |
| 04/08/1981 | EP0026247A1 Method of making an ear insert and ear insert made by this method |
| 03/31/1981 | US4259547 Hearing aid with dual pickup |
| 02/17/1981 | US4251686 Closed sound delivery system |
| 02/03/1981 | US4249137 Amplifier system with AGC, as for an AM radio |
| 12/11/1980 | WO1980002767A1 Speech processor |
| 11/04/1980 | US4232192 Moving-average notch filter |
| 10/15/1980 | EP0016820A1 Method and apparatus for measuring attack and release times of hearing aids |
| 09/23/1980 | US4224470 Headset with limiter circuit |
| 09/16/1980 | US4222393 Tinnitus masker |
| 09/16/1980 | CA1085742A1 Ear pads with earphones |
| 07/15/1980 | US4212119 Audio-vocal integrator apparatus |
| 04/30/1980 | EP0010169A1 Method and device to measure, control and in particular to adjust the maximum sound pressure output of hearing aids |
| 04/30/1980 | EP0010168A1 Method and arrangement to select, adapt, adjust, measure and test hearing aids |
| 03/20/1980 | WO1980000519A1 Method and apparatus for measuring attack and release times of hearing aids |
| 03/04/1980 | US4191864 Method and apparatus for measuring attack and release times of hearing aids |
| 02/12/1980 | US4188667 ARMA filter and method for designing the same |
| 02/05/1980 | US4187472 Amplifier employing matched transistors to provide linear current feedback |
| 02/05/1980 | US4187413 Hearing aid with digital processing for: correlation of signals from plural microphones, dynamic range control, or filtering using an erasable memory |
| 01/23/1980 | EP0007157A2 Improved electrode array and method of making the same |
| 01/22/1980 | US4185168 Method and means for adaptively filtering near-stationary noise from an information bearing signal |
| 10/31/1979 | EP0004988A1 Hearing-aid with combined potentiometer and cylindrical battery holder |
| 10/09/1979 | US4170720 AGC circuit particularly for a hearing aid |
| 08/28/1979 | CA1061255A1 Real time amplitude control of electrical waves |
| 07/10/1979 | US4160881 Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures |
| 06/13/1979 | EP0002226A1 Electrode for implantation into cochlea |
| 05/30/1979 | EP0002068A2 Electrode for implantation into cochlea |
| 05/22/1979 | US4156116 Hearing aids using single side band clipping with output compression AMP |
| 05/22/1979 | US4155890 Dental plastic |
| 05/08/1979 | US4153758 Molded plastic |
| 05/01/1979 | US4152551 Pocket hearing aid with slideable mechanism for battery replacement and access openings |
| 04/24/1979 | US4151480 FET Amplifier with protective circuit |
| 03/06/1979 | CA1050151A1 Method and apparatus for setting an aural prosthesis to provide specific auditory deficiency corrections |
| 02/27/1979 | US4142072 Directional/omnidirectional hearing aid microphone with support |
| 02/13/1979 | US4139742 Cutaneous communication device |
| 01/30/1979 | US4137431 Cable connector for hearing aids |
| 01/09/1979 | US4133984 Plug-type hearing device |
| 12/19/1978 | US4130741 Hearing aid reliner and apparatus for relining hearing aid ear molds |
| 11/21/1978 | US4126769 Moving armature transducer with reinforced and pivoted diaphragm |
| 10/17/1978 | CA1040354A2 Hearing aid transducer connection |
| 10/10/1978 | US4119814 Hearing aid with adjustable frequency response |
| 10/03/1978 | US4118604 Loudness contour compensated hearing aid having ganged volume, bandpass filter, and compressor control |
| 09/26/1978 | US4117444 Hearing aid volume control |
| 08/22/1978 | US4109116 Hearing aid receiver with plural transducers |
| 07/04/1978 | US4099035 Hearing aid with recruitment compensation |
| 06/13/1978 | US4095057 Frequency response testing apparatus |
| 05/23/1978 | US4091067 Process for producing an aural communications receiving device |
| 05/16/1978 | US4090040 Hearing aid with acoustical frequency response modification |
| 04/18/1978 | US4085382 Class B amplifier |
| 03/28/1978 | US4081782 Combined rotary potentiometer and switch |
| 03/07/1978 | US4078233 Analog to digital converter circuit with gain ranging feedback |
| 03/07/1978 | US4078208 Linear amplifier circuit with integrated current injector |
| 02/14/1978 | US4073366 Disposable noise reducing hearing aid attachment |
| 01/17/1978 | US4069400 Modular in-the-ear hearing aid |
| 01/10/1978 | US4068090 Hearing aid |
| 12/27/1977 | US4065647 Automatic acoustical testing system |
| 12/20/1977 | US4063410 Digital watch including a signal transmitter |
| 12/13/1977 | US4063050 Acoustic transducer with improved electret assembly |
| 12/13/1977 | US4063048 Implantable electronic hearing aid |
| 12/13/1977 | US4063047 Key telephone system multilink hands free answer circuit |
| 11/01/1977 | US4056810 Integrated injection logic memory circuit |
| 10/25/1977 | US4055233 Ear coupler |
| 10/04/1977 | US4052572 Hearing aid |
| 10/04/1977 | US4052571 Hearing aid with amplitude compression achieved by clipping a modulated signal |
| 09/27/1977 | US4051331 Speech coding hearing aid system utilizing formant frequency transformation |
| 09/27/1977 | US4051330 Hearing aid having adjustable directivity |
| 09/20/1977 | US4049930 Hearing aid malfunction detection system |
| 08/09/1977 | US4041251 Hearing aid to be worn behind the ear of the user and provided with a pressure-gradient microphone |
| 07/05/1977 | US4034306 D.C. amplifier for use with low supply voltage |
| 06/14/1977 | US4029083 Probe for audiometric apparatus |
| 05/24/1977 | US4025723 Real time amplitude control of electrical waves |
| 05/24/1977 | US4025721 Method of and means for adaptively filtering near-stationary noise from speech |
| 05/03/1977 | US4021611 Electronic hearing apparatus |
| 03/08/1977 | US4010820 Acoustic ear mold for hearing aid |
| 02/08/1977 | US4006796 Earpiece which substantially consists of a thin-walled flexible capsule filled with a liquid medium |
| 02/01/1977 | US4006321 Transducer coupling system |
| 01/18/1977 | US4004229 Ear attachable miniaturized radio receiver |