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Patente

Referenziert von

Zitiert von PatentEingetragenAusgestelltUrsprünglich Bevollmächtigter Titel
US415680015. Nov. 197629. Mai 1979Plessey Handel und Investments AGPiezoelectric transducer
US455559821. Sept. 198326. Nov. 1985AT&T Bell LaboratoriesTeleconferencing acoustic transducer
US474254820. Dez. 19843. Mai 1988American Telephone and Telegraph Company
Bell Telephone Laboratories, Incorporated
Unidirectional second order gradient microphone
US500709120. Okt. 19899. Apr. 1991UTK Uuden Teknologian Keskus OyProcedure and device for facilitating audiovisual observation of a distant object
US512142622. Dez. 19899. Juni 1992AT&T Bell LaboratoriesLoudspeaking telephone station including directional microphone
US522607628. Febr. 19936. Juli 1993AT&T Bell LaboratoriesDirectional microphone assembly
US563393511. Apr. 199427. Mai 1997Matsushita Electric Industrial Co., Ltd.Stereo ultradirectional microphone apparatus
US56920601. Mai 199525. Nov. 1997Knowles Electronics, Inc.Unidirectional microphone
US574558831. Mai 199628. Apr. 1998Lucent Technologies Inc.Differential microphone assembly with passive suppression of resonances
US584817222. Nov. 19968. Dez. 1998Lucent Technologies Inc.Directional microphone
US67174889. Sept. 20026. Apr. 2004Nth Tech CorporationResonator with a member having an embedded charge and a method of making thereof
US68420093. Juni 200311. Jan. 2005Nth Tech CorporationBiohazard sensing system and methods thereof
US71167925. Juli 20003. Okt. 2006GN Resound North America CorporationDirectional microphone system
US719539331. Mai 200227. März 2007Rochester Institute of TechnologyMicro fluidic valves, agitators, and pumps and methods thereof
US721192310. Nov. 20031. Mai 2007Nth Tech CorporationRotational motion based, electrostatic power source and methods thereof
US721758224. Aug. 200415. Mai 2007Rochester Institute of TechnologyMethod for non-damaging charge injection and a system thereof
US728001412. März 20029. Okt. 2007Rochester Institute of TechnologyMicro-electro-mechanical switch and a method of using and making thereof
US728732824. Aug. 200430. Okt. 2007Rochester Institute of TechnologyMethods for distributed electrode injection
US737877512. Nov. 200327. Mai 2008Nth Tech CorporationMotion based, electrostatic power source and methods thereof
US74082361. März 20075. Aug. 2008Nth TechMethod for non-damaging charge injection and system thereof
US76567494. Sept. 20072. Febr. 2010The United States of America as represented by the Secretary of the ArmySystems and methods for analyzing acoustic waves
US817025619. Dez. 20081. Mai 2012Cisco Technology, Inc.Microphone assembly for minimizing acoustic feedback from a loudspeaker

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