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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US410800625 Mar 197722 Ago 1978Johnson, Matthey & Co., LimitedAccelerometers
US60758701 Dic 199713 Jun 2000Microtronic B.V.Electroacoustic transducer with improved shock resistance
US665813416 Ago 19992 Dic 2003SonionMicrotronic Nederland B.V.Shock improvement for an electroacoustic transducer
US706522428 Sep 200120 Jun 2006Sonionmicrotronic Nederland B.V.Microphone for a hearing aid or listening device with improved internal damping and foreign material protection
US70724826 Sep 20024 Jul 2006Sonion Nederland B.V.Microphone with improved sound inlet port
US72366096 Oct 200026 Jun 2007Knowles Electronics, LLC.Electro-acoustic transducer with resistance to shock-waves
US799578921 Jun 20079 Ago 2011Knowles Electronics, LLCElectroacoustic transducer with resistance to shock-waves