Inventor · disambiguated record
Shigeharu Sumi
Also filed as: SUMI SHIGEHARU
22 granted patents·3 pending applications·225 citations·filing 1989–2025
94Inventor score
Top patents by PatentIndex Score
25 records- 0193US5559382ASpindle motorNIDEC CORP·Filed 1993·Granted Sep 24, 1996·93 cites·15 claims
- 0286US7265467B2Fluid dynamic pressure bearing and spindle motorNIDEC CORP·Filed 2004·Granted Sep 4, 2007·23 cites·9 claims
- 0385US6671125B1Fluid seal and bearing with sameNIDEC CORP·Filed 2000·Granted Dec 30, 2003·22 cites·19 claims
- 0483US2025300510A1Coil, motor, and method of manufacturing coilNIDEC CORP·Filed 2025·Application pending·0 cites
- 0575US11245294B2Stator and motorNIDEC CORP·Filed 2018·Granted Feb 8, 2022·1 cites·20 claims
- 0675US7635936B2Fluid dynamic pressure bearing and spindle motorNIDEC CORP·Filed 2007·Granted Dec 22, 2009·5 cites·22 claims
- 0772US8277126B2Fluid dynamic bearing deviceHORI MASAHARU·Filed 2008·Granted Oct 2, 2012·4 cites·4 claims
- 0871US12348095B2Coil with contour shape, stator, and motor having sameNIDEC CORP·Filed 2020·Granted Jul 1, 2025·0 cites·9 claims
- 0964US12354790B2Winding machine and method of manufacturing coilNIDEC CORP·Filed 2020·Granted Jul 8, 2025·0 cites·12 claims
- 1062US8867166B2Spindle motor and disk drive apparatusNIDEC CORP·Filed 2013·Granted Oct 21, 2014·1 cites·25 claims
- 1162US7343682B2Technique for filling bearing clearance of fluid-dynamic-pressure bearing unit with oilNIDEC CORP·Filed 2004·Granted Mar 18, 2008·10 cites·9 claims
- 1258US11478840B2Manufacturing method of wire rod, manufacturing apparatus of wire rod, wire rod, and motorNIDEC CORP·Filed 2018·Granted Oct 25, 2022·0 cites·14 claims
- 1357US11482913B2Coil manufacturing method, coil manufacturing device, coil, and motorNIDEC CORP·Filed 2018·Granted Oct 25, 2022·0 cites·18 claims
- 1457US2023044105A1MotorNIDEC CORP·Filed 2022·Application pending·0 cites
- 1555US9899884B2Motor armature and motorNIDEC CORP·Filed 2015·Granted Feb 20, 2018·0 cites·14 claims
- 1653US11316414B2Method of manufacturing coil and method of manufacturing motorNIDEC CORP·Filed 2019·Granted Apr 26, 2022·0 cites·7 claims
- 1749US7128468B2Hydrodynamic bearing, method of manufacturing the same, method of manufacturing shaft member for hydrodynamic bearing, spindle motor, and recording disk driving apparatusNIDEC CORP·Filed 2004·Granted Oct 31, 2006·3 cites·17 claims
- 1849US2021376670A1Stator and motorNIDEC CORP·Filed 2019·Application pending·0 cites
- 1948US6668025B1Tuning demodulator for digitally modulated RF signalsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 23, 2003·24 cites·18 claims
- 2048US6052571ATuner for PSK or PAM data applicationsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Apr 18, 2000·12 cites·113 claims
- 2146US6072992AHigh-frequency deviceMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Jun 6, 2000·19 cites·111 claims
- 2244US9860638B2Acoustic device, acoustic system, moving body device, and malfunction diagnosis method for acoustic systemPANASONIC IP MAN CO LTD·Filed 2014·Granted Jan 2, 2018·0 cites·24 claims
- 2343US7511918B2Spindle motor and recording disk driving apparatus having the spindle motorNIDEC CORP·Filed 2006·Granted Mar 31, 2009·0 cites·19 claims
- 2443US5099213APhase-locked oscillator with phase lock detection circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Mar 24, 1992·8 cites·2 claims
- 2541US9779625B2Proximity alarm device, proximity alarm system, mobile device, and method for diagnosing failure of proximity alarm systemPANASONIC IP MAN CO LTD·Filed 2013·Granted Oct 3, 2017·0 cites·31 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →