Assignee
FOSTER ELECTRIC CO LTD
61 granted patents·15 pending applications·769 citations·filing 1975–2023
Top patents by PatentIndex Score
76 records- 0195US9980032B2Earphone device and sound-reproducing system using the sameFOSTER ELECTRIC CO LTD·Filed 2016·Granted May 22, 2018·17 cites·4 claims
- 0294US11831214B2Oscillatory actuator with leaf springs having elastic member bridging spring armsFOSTER ELECTRIC CO LTD·Filed 2022·Granted Nov 28, 2023·9 cites·6 claims
- 0391USD718284SEarphoneFOSTER ELECTRIC CO LTD·Filed 2013·Granted Nov 25, 2014·124 cites·1 claims
- 0487USD718285SEarphoneFOSTER ELECTRIC CO LTD·Filed 2013·Granted Nov 25, 2014·53 cites·1 claims
- 0586US12375848B2Electroacoustic transducer and electroacoustic transducer unitFOSTER ELECTRIC CO LTD·Filed 2022·Granted Jul 29, 2025·2 cites·6 claims
- 0686US6845166B2Plane driving type electroacoustic transducerFOSTER ELECTRIC CO LTD·Filed 2001·Granted Jan 18, 2005·37 cites·4 claims
- 0784US12244200B2Vibration actuatorFOSTER ELECTRIC CO LTD·Filed 2020·Granted Mar 4, 2025·2 cites·4 claims
- 0882US3997739AElectrodynamic type electroacoustic transducerFOSTER ELECTRIC CO LTD·Filed 1975·Granted Dec 14, 1976·60 cites·1 claims
- 0979US12285781B2Oscillatory actuatorFOSTER ELECTRIC CO LTD·Filed 2021·Granted Apr 29, 2025·1 cites·10 claims
- 1079US5142587AIntra-concha type electroacoustic transducer for use with audio devices etc.FOSTER ELECTRIC CO LTD·Filed 1990·Granted Aug 25, 1992·65 cites·7 claims
- 1178USD909344SEarphonesFOSTER ELECTRIC CO LTD·Filed 2019·Granted Feb 2, 2021·23 cites·1 claims
- 1278US10211009B2Switch-containing cableFOSTER ELECTRIC CO LTD·Filed 2016·Granted Feb 19, 2019·4 cites·4 claims
- 1376US11917388B2Speaker deviceFOSTER ELECTRIC CO LTD·Filed 2020·Granted Feb 27, 2024·2 cites·5 claims
- 1476US11563365B2Oscillatory actuator with two springs having elastic member bridging between adjacent armsFOSTER ELECTRIC CO LTD·Filed 2019·Granted Jan 24, 2023·1 cites·6 claims
- 1576USD726165SEarphoneFOSTER ELECTRIC CO LTD·Filed 2014·Granted Apr 7, 2015·29 cites·1 claims
- 1672US12003155B2Oscillatory actuatorFOSTER ELECTRIC CO LTD·Filed 2019·Granted Jun 4, 2024·1 cites·6 claims
- 1770US7324834B2Speaker systemFOSTER ELECTRIC CO LTD·Filed 2005·Granted Jan 29, 2008·9 cites·5 claims
- 1868US10791399B2Electroacoustic converter, assembly having electroacoustic converter, and electroacoustic converter apparatus having assemblyFOSTER ELECTRIC CO LTD·Filed 2015·Granted Sep 29, 2020·2 cites·2 claims
- 1967US5740264AMiniature electroacoustic transducerFOSTER ELECTRIC CO LTD·Filed 1996·Granted Apr 14, 1998·42 cites·8 claims
- 2065US6899794B1Speaker device, and method and device for producing the sameFOSTER ELECTRIC CO LTD·Filed 2000·Granted May 31, 2005·10 cites·13 claims
- 2164US12477275B2Speaker device and acoustic systemFOSTER ELECTRIC CO LTD·Filed 2023·Granted Nov 18, 2025·0 cites·6 claims
- 2264US5705108AMethod for making edge for loudspeaker diaphragmFOSTER ELECTRIC CO LTD·Filed 1996·Granted Jan 6, 1998·26 cites·6 claims
- 2364US5371806ALoudspeakerFOSTER ELECTRIC CO LTD·Filed 1993·Granted Dec 6, 1994·37 cites·1 claims
- 2463US7184567B2Thin speaker and method of manufacturing the speakerFOSTER ELECTRIC CO LTD·Filed 2003·Granted Feb 27, 2007·16 cites·1 claims
- 2560US5003609AWhole-surface driven speakerFOSTER ELECTRIC CO LTD·Filed 1989·Granted Mar 26, 1991·48 cites·4 claims
- 2659US6371241B1Speaker deviceFOSTER ELECTRIC CO LTD·Filed 2000·Granted Apr 16, 2002·8 cites·14 claims
- 2758US7181041B2Flat speaker of full-face drivingFOSTER ELECTRIC CO LTD·Filed 2002·Granted Feb 20, 2007·6 cites·1 claims
- 2855US6940991B2Damper for loudspeaker and method for manufacturing sameFOSTER ELECTRIC CO LTD·Filed 2002·Granted Sep 6, 2005·9 cites·3 claims
- 2955US5740265ALoudspeaker unit and loudspeaker system employing the unitFOSTER ELECTRIC CO LTD·Filed 1996·Granted Apr 14, 1998·31 cites·5 claims
- 3053US12192725B2Vehicular speakerFOSTER ELECTRIC CO LTD·Filed 2021·Granted Jan 7, 2025·0 cites·18 claims
- 3153USD897984SHeadphoneFOSTER ELECTRIC CO LTD·Filed 2018·Granted Oct 6, 2020·7 cites·1 claims
- 3252US12501220B2Speaker and method of producing the sameFOSTER ELECTRIC CO LTD·Filed 2021·Granted Dec 16, 2025·0 cites·4 claims
- 3352US6832106B2Electroacoustic transducerFOSTER ELECTRIC CO LTD·Filed 2003·Granted Dec 14, 2004·7 cites·12 claims
- 3452US2025310697A1Vibration Generating DeviceFOSTER ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
- 3551US2024180776A1Vibration deviceFOSTER ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 3651US2024180777A1Vibration deviceFOSTER ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 3750USD761233SEarphoneFOSTER ELECTRIC CO LTD·Filed 2015·Granted Jul 12, 2016·6 cites·1 claims
- 3849US11763793B2Silent device for air conditioning equipmentFOSTER ELECTRIC CO LTD·Filed 2020·Granted Sep 19, 2023·0 cites·5 claims
- 3948US12576432B2Vibration deviceFOSTER ELECTRIC CO LTD·Filed 2023·Granted Mar 17, 2026·0 cites·10 claims
- 4048US12348944B2Diaphragm for electroacoustic transducerFOSTER ELECTRIC CO LTD·Filed 2021·Granted Jul 1, 2025·0 cites·10 claims
- 4148US2024357283A1SpeakerFOSTER ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 4247USD771016SSpeakerFOSTER ELECTRIC CO LTD·Filed 2015·Granted Nov 8, 2016·6 cites·1 claims
- 4345US12506992B2Electroacoustic transducer and mounting structure of sameFOSTER ELECTRIC CO LTD·Filed 2023·Granted Dec 23, 2025·0 cites·12 claims
- 4445US12081066B2Actuator and display unit provided therewithFOSTER ELECTRIC CO LTD·Filed 2020·Granted Sep 3, 2024·0 cites·11 claims
- 4545USD821361SActuatorFOSTER ELECTRIC CO LTD·Filed 2016·Granted Jun 26, 2018·7 cites·1 claims
- 4645US6183674B1Manufacturing method of diaphragm for use in electroacoustic transducersFOSTER ELECTRIC CO LTD·Filed 1999·Granted Feb 6, 2001·20 cites·6 claims
- 4745US5511131ALoudspeakerFOSTER ELECTRIC CO LTD·Filed 1994·Granted Apr 23, 1996·18 cites·2 claims
- 4845US2024186875A1Vibration actuatorFOSTER ELECTRIC CO LTD·Filed 2022·Application pending·0 cites
- 4944USD771021SSpeakerFOSTER ELECTRIC CO LTD·Filed 2015·Granted Nov 8, 2016·5 cites·1 claims
- 5044US2025227400A1Vehicle Electroacoustic TransducerFOSTER ELECTRIC CO LTD·Filed 2023·Application pending·0 cites
Showing the top 50 of 76 patent records by PatentIndex Score.
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