Inventor · disambiguated record
Keiji Nakagawa
Also filed as: NAKAGAWA KEIJI
41 granted patents·14 pending applications·218 citations·filing 1984–2025
97Inventor score
Top patents by PatentIndex Score
55 records- 0189US9347776B2Vibrating element and manufacturing method for the same, gyro sensor, electronic apparatus and moving objectSEIKO EPSON CORP·Filed 2013·Granted May 24, 2016·6 cites·3 claims
- 0288US7501044B2Paper making elastic beltYAMAUCHI CORP·Filed 2005·Granted Mar 10, 2009·16 cites·18 claims
- 0382US11667875B1Microfluidic devices and uses thereofTHINKCYTE INC·Filed 2019·Granted Jun 6, 2023·2 cites·24 claims
- 0482US9222775B2Vibrator element, sensor unit, and electronic deviceSEIKO EPSON CORP·Filed 2013·Granted Dec 29, 2015·4 cites·16 claims
- 0581US10760908B2Vibration device, angular velocity sensor, electronic device, and vehicleSEIKO EPSON CORP·Filed 2018·Granted Sep 1, 2020·3 cites·20 claims
- 0681US2025044212A1Flow cytometer, imaging device, position detection method, and programTHINKCYTE K K·Filed 2024·Application pending·0 cites
- 0778US9683843B2Vibrator element and method of manufacturing the sameSEIKO EPSON CORP·Filed 2014·Granted Jun 20, 2017·6 cites·14 claims
- 0878US7646678B2Analog watchRICOH ELEMEX CORP·Filed 2005·Granted Jan 12, 2010·8 cites·26 claims
- 0975US2025273486A1Semiconductor manufacturing device and method of using the sameTOSHIBA KK·Filed 2025·Application pending·0 cites
- 1074US9490773B2Vibrating element, electronic device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2015·Granted Nov 8, 2016·2 cites·12 claims
- 1172US9130147B2Vibrating reed, gyro sensor, electronic apparatus, and mobile unitSEIKO EPSON CORP·Filed 2013·Granted Sep 8, 2015·4 cites·12 claims
- 1271US12322611B2Semiconductor manufacturing device and method of using the sameTOSHIBA KK·Filed 2022·Granted Jun 3, 2025·0 cites·14 claims
- 1370US5128445AMethod to recover poly(arylene sulfide) polymers with water-polar organic compoundPHILLIPS PETROLEUM CO·Filed 1990·Granted Jul 7, 1992·21 cites·13 claims
- 1470US4803948AHeat processing apparatus for semiconductor manufacturingDAINIPPON SCREEN MFG·Filed 1987·Granted Feb 14, 1989·38 cites·5 claims
- 1570US2024410810A1Flow cytometer, imaging device, position detection method, and programTHINKCYTE K K·Filed 2021·Application pending·0 cites
- 1666US9874484B2Physical quantity detecting device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2015·Granted Jan 23, 2018·1 cites·19 claims
- 1765US12235202B2Flow cytometer performance evaluation method and standard particle suspensionTHINKCYTE K K·Filed 2022·Granted Feb 25, 2025·0 cites·21 claims
- 1864USD569741SWatchRICOH ELEMEX CORP·Filed 2005·Granted May 27, 2008·15 cites·1 claims
- 1964US4849608AApparatus for heat-treating wafersDAINIPPON SCREEN MFG·Filed 1988·Granted Jul 18, 1989·31 cites·23 claims
- 2062US11555702B2Physical quantity detection device, manufacturing method for physical quantity detection device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2020·Granted Jan 17, 2023·0 cites·3 claims
- 2161US6832479B2Resin piston for master cylinder in brake system, master cylinder, die for molding resin piston for master cylinder, and manufacturing method of resin piston for master cylinderBOSCH BRAKING SYS CORP·Filed 2001·Granted Dec 21, 2004·4 cites·2 claims
- 2261US4813450AFluid pressure control valveNIPPON AIR BRAKE CO·Filed 1987·Granted Mar 21, 1989·11 cites·6 claims
- 2358US2024230507A1Feature value calculation device, feature value calculation method, and programTHINKCYTE INC·Filed 2022·Application pending·0 cites
- 2457US10794778B2Physical quantity detecting device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2017·Granted Oct 6, 2020·0 cites·18 claims
- 2557USD306004SWater scooterYAMAHA MOTOR CO LTD·Filed 1987·Granted Feb 13, 1990·7 cites·1 claims
- 2655US9523578B2Vibrating element and manufacturing method for the same, gyro sensor, electronic apparatus and moving objectSEIKO EPSON CORP·Filed 2016·Granted Dec 20, 2016·0 cites·15 claims
- 2755US5078072ACatamaranYAMAHA MOTOR CO LTD·Filed 1991·Granted Jan 7, 1992·14 cites·5 claims
- 2853US4658942ALiquid pressure operated braking systemNISSAN MOTOR·Filed 1984·Granted Apr 21, 1987·7 cites·4 claims
- 2953US2017059393A1Physical Quantity Detection Device, Manufacturing Method For Physical Quantity Detection Device, Electronic Apparatus, And Moving ObjectSEIKO EPSON CORP·Filed 2016·Application pending·0 cites
- 3051US2005102732A1Five-finger glove permitting wearer's hand to be liberated as it is wornFiled 2004·Application pending·0 cites
- 3151US2023039952A1Flow cell of flow cytometer and cleaning method of flow cell of flow cytometerTHINKCYTE K K·Filed 2021·Application pending·0 cites
- 3250US9587944B2Angular velocity sensor, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2014·Granted Mar 7, 2017·0 cites·18 claims
- 3350US9581446B2Vibrating element with an increased amount of change in detuning frequency per unit mass, vibrator, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2014·Granted Feb 28, 2017·0 cites·20 claims
- 3449US10079590B2Vibrator element, electronic device, electronic apparatus, moving object, and method of manufacturing vibrator elementSEIKO EPSON CORP·Filed 2015·Granted Sep 18, 2018·0 cites·18 claims
- 3548US10001373B2Resonator element, electronic device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2015·Granted Jun 19, 2018·0 cites·14 claims
- 3648US9354060B2Vibrating element, gyro sensor, electronic apparatus and moving objectSEIKO EPSON CORP·Filed 2013·Granted May 31, 2016·0 cites·10 claims
- 3748US5199367ACatamaranYAMAHA MOTOR CO LTD·Filed 1991·Granted Apr 6, 1993·11 cites·25 claims
- 3848US2005217716A1Photovoltaic power generation systemKYOCERA CORP·Filed 2005·Application pending·0 cites
- 3947US9093638B2Vibrating element, sensor unit and electronic apparatusSEIKO EPSON CORP·Filed 2013·Granted Jul 28, 2015·0 cites·12 claims
- 4046US9696156B2Vibrating element, sensor unit, electronic apparatus, and method for manufacturing vibrating elementSEIKO EPSON CORP·Filed 2013·Granted Jul 4, 2017·0 cites·14 claims
- 4145US9255802B2Resonator element, resonator, oscillator, electronic apparatus, physical quantity sensor, mobile object, and frequency adjustment method of resonator elementSEIKO EPSON CORP·Filed 2014·Granted Feb 9, 2016·0 cites·19 claims
- 4245US2015263243A1Light emitting deviceTOSHIBA KK·Filed 2014·Application pending·0 cites
- 4344US8192585B2Shoe press beltNAKAGAWA KEIJI·Filed 2007·Granted Jun 5, 2012·0 cites·10 claims
- 4444US2015054011A1Light emitting deviceTOSHIBA KK·Filed 2014·Application pending·0 cites
- 4542US10088314B2Angular velocity detection element, angular velocity detection device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2016·Granted Oct 2, 2018·0 cites·20 claims
- 4642US9246470B2Vibrating element, vibrator, oscillator, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2014·Granted Jan 26, 2016·0 cites·10 claims
- 4742US4610338ABrake device for controlling brake operation on inclinesNISSAN MOTOR·Filed 1984·Granted Sep 9, 1986·5 cites·10 claims
- 4842US2013314103A1Receiving apparatus for test signal, electronic apparatus therefor and signal receiving method thereofFUJITSU LTD·Filed 2013·Application pending·0 cites
- 4939US2016282117A1Angular velocity detection element, angular velocity detection device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2016·Application pending·0 cites
- 5038US2016123736A1Vibration element, electronic device, electronic apparatus, and moving objectSEIKO EPSON CORP·Filed 2015·Application pending·0 cites
Showing the top 50 of 55 patent records by PatentIndex Score.
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