Assignee
NOISE CANCELLATION TECH
US·72 granted patents·4,496 citations·filing 1988–1999
Top patents by PatentIndex Score
72 records- 0197US5481615AAudio reproduction systemNOISE CANCELLATION TECH·Filed 1993·Granted Jan 2, 1996·196 cites·20 claims
- 0296US5815582AActive plus selective headsetNOISE CANCELLATION TECH·Filed 1997·Granted Sep 29, 1998·254 cites·20 claims
- 0395US5828768AMultimedia personal computer with active noise reduction and piezo speakersNOISE CANCELLATION TECH·Filed 1994·Granted Oct 27, 1998·376 cites·21 claims
- 0495US4878188ASelective active cancellation system for repetitive phenomenaNOISE CANCELLATION TECH·Filed 1988·Granted Oct 31, 1989·131 cites·9 claims
- 0593US5097923AActive sound attenation system for engine exhaust systems and the likeNOISE CANCELLATION TECH·Filed 1989·Granted Mar 24, 1992·112 cites·33 claims
- 0692US5473214ALow voltage bender piezo-actuatorsNOISE CANCELLATION TECH·Filed 1993·Granted Dec 5, 1995·78 cites·13 claims
- 0790US5600106AActively sound reduced muffler having a venturi effect configurationNOISE CANCELLATION TECH·Filed 1996·Granted Feb 4, 1997·69 cites·5 claims
- 0890US5251863AActive force cancellation systemNOISE CANCELLATION TECH·Filed 1992·Granted Oct 12, 1993·85 cites·15 claims
- 0989US5604813AIndustrial headsetNOISE CANCELLATION TECH·Filed 1994·Granted Feb 18, 1997·111 cites·12 claims
- 1088US6118878AVariable gain active noise canceling system with improved residual noise sensingNOISE CANCELLATION TECH·Filed 1997·Granted Sep 12, 2000·383 cites·51 claims
- 1187US5502869AHigh volume, high performance, ultra quiet vacuum cleanerNOISE CANCELLATION TECH·Filed 1994·Granted Apr 2, 1996·92 cites·9 claims
- 1286US5901231APiezo speaker for improved passenger cabin audio systemsNOISE CANCELLATION TECH·Filed 1995·Granted May 4, 1999·90 cites·2 claims
- 1386US5638456APiezo speaker and installation method for laptop personal computer and other multimedia applicationsNOISE CANCELLATION TECH·Filed 1994·Granted Jun 10, 1997·129 cites·18 claims
- 1485US5619020AMufflerNOISE CANCELLATION TECH·Filed 1996·Granted Apr 8, 1997·80 cites·18 claims
- 1585US5313945AActive attenuation system for medical patientsNOISE CANCELLATION TECH·Filed 1989·Granted May 24, 1994·61 cites·24 claims
- 1684US5841876AHybrid analog/digital vibration control systemNOISE CANCELLATION TECH·Filed 1996·Granted Nov 24, 1998·62 cites·26 claims
- 1784US5105377ADigital virtual earth active cancellation systemNOISE CANCELLATION TECH·Filed 1990·Granted Apr 14, 1992·115 cites·32 claims
- 1883US5457749AElectronic mufflerNOISE CANCELLATION TECH·Filed 1993·Granted Oct 10, 1995·60 cites·18 claims
- 1982US5375174ARemote siren headsetNOISE CANCELLATION TECH·Filed 1993·Granted Dec 20, 1994·61 cites·8 claims
- 2082US5315661AActive high transmission loss panelNOISE CANCELLATION TECH·Filed 1992·Granted May 24, 1994·60 cites·17 claims
- 2181US5649018AHybrid analog/digital vibration controlNOISE CANCELLATION TECH·Filed 1995·Granted Jul 15, 1997·37 cites·2 claims
- 2281US5475761AAdaptive feedforward and feedback control systemNOISE CANCELLATION TECH·Filed 1994·Granted Dec 12, 1995·54 cites·25 claims
- 2380US5768473AAdaptive speech filterNOISE CANCELLATION TECH·Filed 1995·Granted Jun 16, 1998·100 cites·16 claims
- 2479US6215884B1Piezo speaker for improved passenger cabin audio systemNOISE CANCELLATION TECH·Filed 1998·Granted Apr 10, 2001·61 cites·10 claims
- 2579US5553153AMethod and system for on-line system identificationNOISE CANCELLATION TECH·Filed 1993·Granted Sep 3, 1996·52 cites·18 claims
- 2678US5692053AActive acoustic transmission loss boxNOISE CANCELLATION TECH·Filed 1992·Granted Nov 25, 1997·49 cites·17 claims
- 2778US5550334AActively sound reduced muffler having a venturi effect configurationNOISE CANCELLATION TECH·Filed 1991·Granted Aug 27, 1996·42 cites·4 claims
- 2876US5652770ASampled-data filter with low delayNOISE CANCELLATION TECH·Filed 1992·Granted Jul 29, 1997·28 cites·19 claims
- 2976US5638454ANoise reduction systemNOISE CANCELLATION TECH·Filed 1992·Granted Jun 10, 1997·50 cites·21 claims
- 3075US5621656AAdaptive resonator vibration control systemNOISE CANCELLATION TECH·Filed 1992·Granted Apr 15, 1997·46 cites·14 claims
- 3175US5568557AActive vibration control system for aircraftNOISE CANCELLATION TECH·Filed 1994·Granted Oct 22, 1996·46 cites·13 claims
- 3275US5452361AReduced VLF overload susceptibility active noise cancellation headsetNOISE CANCELLATION TECH·Filed 1993·Granted Sep 19, 1995·47 cites·10 claims
- 3375US5423523AIntegrated hydraulic mount for active vibration control systemNOISE CANCELLATION TECH·Filed 1990·Granted Jun 13, 1995·30 cites·5 claims
- 3475US5416845ASingle and multiple channel block adaptive methods and apparatus for active sound and vibration controlNOISE CANCELLATION TECH·Filed 1994·Granted May 16, 1995·68 cites·5 claims
- 3574US5838805APiezoelectric transducersNOISE CANCELLATION TECH·Filed 1995·Granted Nov 17, 1998·49 cites·24 claims
- 3674US5748749AActive noise cancelling mufflerNOISE CANCELLATION TECH·Filed 1996·Granted May 5, 1998·48 cites·13 claims
- 3774US4862506AMonitoring, testing and operator controlling of active noise and vibration cancellation systemsNOISE CANCELLATION TECH·Filed 1988·Granted Aug 29, 1989·42 cites·35 claims
- 3873US5692054AMultiple source self noise cancellationNOISE CANCELLATION TECH·Filed 1992·Granted Nov 25, 1997·47 cites·28 claims
- 3973US5361303AFrequency domain adaptive control systemNOISE CANCELLATION TECH·Filed 1993·Granted Nov 1, 1994·40 cites·24 claims
- 4073US5126681AIn-wire selective active cancellation systemNOISE CANCELLATION TECH·Filed 1989·Granted Jun 30, 1992·30 cites·4 claims
- 4172US6181797B1Piezo speaker for improved passenger cabin audio systemsNOISE CANCELLATION TECH·Filed 1999·Granted Jan 30, 2001·50 cites·12 claims
- 4271US6108610AMethod and system for updating noise estimates during pauses in an information signalNOISE CANCELLATION TECH·Filed 1998·Granted Aug 22, 2000·100 cites·16 claims
- 4371US5652799ANoise reducing systemNOISE CANCELLATION TECH·Filed 1996·Granted Jul 29, 1997·40 cites·21 claims
- 4470US5332203ADual chambered, active vibration damper with reactive force producing pistonsNOISE CANCELLATION TECH·Filed 1993·Granted Jul 26, 1994·24 cites·7 claims
- 4569US6195440B1Piezoelectric transducersNOISE CANCELLATION TECH·Filed 1998·Granted Feb 27, 2001·39 cites·14 claims
- 4669US5052510AHybrid type vibration isolation apparatusNOISE CANCELLATION TECH·Filed 1990·Granted Oct 1, 1991·32 cites·14 claims
- 4767US6142254ADecorative speaker coverNOISE CANCELLATION TECH·Filed 1999·Granted Nov 7, 2000·43 cites·30 claims
- 4867US5418857AActive control system for noise shapingNOISE CANCELLATION TECH·Filed 1993·Granted May 23, 1995·32 cites·30 claims
- 4967US4977600ASound attenuation system for personal seatNOISE CANCELLATION TECH·Filed 1988·Granted Dec 11, 1990·73 cites·16 claims
- 5066US5471106AMethods and apparatus for closed-loop control of magnetic bearingsNOISE CANCELLATION TECH·Filed 1994·Granted Nov 28, 1995·31 cites·39 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
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