Inventor · disambiguated record
Hiroshi Sakai
Also filed as: SAKAI HIROSHI
260 granted patents·66 pending applications·4,694 citations·filing 1975–2025
99Inventor score
Top patents by PatentIndex Score
326 records- 0197US11567139B2Secondary battery diagnostic deviceHONDA MOTOR CO LTD·Filed 2021·Granted Jan 31, 2023·3 cites·18 claims
- 0296US6427986B1Air suspension apparatusTOKICO LTD·Filed 2000·Granted Aug 6, 2002·84 cites·21 claims
- 0395US7470474B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus including both oxide and non-oxide perpendicular magnetic layersTOSHIBA KK·Filed 2004·Granted Dec 30, 2008·48 cites·16 claims
- 0494US4031165AProcess for preparing polyester elastomersTEIJIN LTD·Filed 1975·Granted Jun 21, 1977·70 cites·6 claims
- 0593US5331309ADrip detecting device and drip alarming device and drip rate control device which incorporate drip detecting deviceTERUMO CORP·Filed 1992·Granted Jul 19, 1994·113 cites·5 claims
- 0693US4632585AImage forming apparatusTOSHIBA KK·Filed 1985·Granted Dec 30, 1986·199 cites·3 claims
- 0792US8724093B2Apparatus and method for detecting division lines depicted on roadSAKAI HIROSHI·Filed 2011·Granted May 13, 2014·26 cites·26 claims
- 0892US6699600B2Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordingsSHOWA DENKO KK·Filed 2002·Granted Mar 2, 2004·38 cites·16 claims
- 0992US6682826B2Magnetic recording medium, method of manufacturing therefor, and magnetic read/write apparatusSHOWA DENKO KK·Filed 2002·Granted Jan 27, 2004·40 cites·14 claims
- 1092US4306164APulse motorOKI ELECTRIC IND CO LTD·Filed 1978·Granted Dec 15, 1981·92 cites·4 claims
- 1191US11725883B2Heat sinkFURUKAWA ELECTRIC CO LTD·Filed 2022·Granted Aug 15, 2023·2 cites·10 claims
- 1291US11529819B2Recording material and compoundNIPPON SODA CO·Filed 2018·Granted Dec 20, 2022·6 cites·2 claims
- 1390US10266957B2Chrome-plated part and manufacturing method of the sameSUGAWARA SOICHIRO·Filed 2009·Granted Apr 23, 2019·22 cites·21 claims
- 1490US8794073B2Structure for attaching vibration sensor to storage deviceKASAI SHIGERU·Filed 2010·Granted Aug 5, 2014·12 cites·15 claims
- 1589US6818331B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Nov 16, 2004·27 cites·12 claims
- 1688US7166376B2Magnetic recording medium including a high-magnetostriction layer and magnetic recording/reproducing apparatusTOSHIBA KK·Filed 2004·Granted Jan 23, 2007·23 cites·15 claims
- 1788US5533597ASuspension control deviceTOKICO LTD·Filed 1995·Granted Jul 9, 1996·83 cites·16 claims
- 1888US4973940AOptimum impedance system for coupling transceiver to power line carrier networkCOLIN ELECTRONICS·Filed 1987·Granted Nov 27, 1990·97 cites·7 claims
- 1987US7867638B2Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2008·Granted Jan 11, 2011·6 cites·12 claims
- 2087US7664148B2Passive Q switch laser deviceNAT INST NATURAL SCIENCES·Filed 2005·Granted Feb 16, 2010·11 cites·7 claims
- 2187US7083870B2Magnetic recording medium, method of manufacturing the same, and magnetic recording and reproduction apparatusTOSHIBA KK·Filed 2003·Granted Aug 1, 2006·22 cites·7 claims
- 2287US6799790B2Automatically opening and closing system for vehicleMITSUBA CORP·Filed 2003·Granted Oct 5, 2004·34 cites·18 claims
- 2387US6761982B2Magnetic recording medium, production process and apparatus thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2001·Granted Jul 13, 2004·23 cites·30 claims
- 2487US4543137AWater-in-oil emulsion explosive compositionNIPPON OILS & FATS CO LTD·Filed 1984·Granted Sep 24, 1985·37 cites·12 claims
- 2586US11433730B2Air suspension apparatusHITACHI ASTEMO LTD·Filed 2019·Granted Sep 6, 2022·6 cites·4 claims
- 2684US10658734B2Antenna device and communications devicePANASONIC IP MAN CO LTD·Filed 2019·Granted May 19, 2020·2 cites·10 claims
- 2784US10224601B2Antenna device and communications devicePANASONIC IP MAN CO LTD·Filed 2013·Granted Mar 5, 2019·5 cites·10 claims
- 2884US6468602B2Method of manufacturing a magnetic recording mediumSHOWA DENKO KK·Filed 2001·Granted Oct 22, 2002·17 cites·13 claims
- 2984US6316062B1Magnetic recording medium and method of producing the sameSHOWA DENKO KK·Filed 1998·Granted Nov 13, 2001·36 cites·8 claims
- 3083US10396439B2Antenna device and communications devicePANASONIC IP MAN CO LTD·Filed 2018·Granted Aug 27, 2019·2 cites·20 claims
- 3183US8179241B2Vehicle-use visual field assistance system in which information dispatch apparatus transmits images of blind spots to vehiclesSAKAI HIROSHI·Filed 2008·Granted May 15, 2012·22 cites·22 claims
- 3283US6677061B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Jan 13, 2004·17 cites·21 claims
- 3383US6548194B2Perpendicular magnetic recording medium and a magnetic reproducing apparatusTOSHIBA KK·Filed 2001·Granted Apr 15, 2003·17 cites·8 claims
- 3483US5743856AApparatus for measuring pulse-wave propagation velocityCOLIN CORP·Filed 1996·Granted Apr 28, 1998·256 cites·14 claims
- 3582US10106863B2Method for operation of blast furnaceNIPPON STEEL & SUMITOMO METAL CORP·Filed 2015·Granted Oct 23, 2018·5 cites·14 claims
- 3682US8283468B2Organometallic complex and method for producing the sameSAKAI HIROSHI·Filed 2010·Granted Oct 9, 2012·3 cites·14 claims
- 3782US6808830B2Magnetic recording medium, production process and apparatus thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Oct 26, 2004·15 cites·33 claims
- 3882US6662189B2Method of performing data mining tasks for generating decision tree and apparatus thereforTOSHIBA KK·Filed 2001·Granted Dec 9, 2003·48 cites·18 claims
- 3981US6731957B1Wireless communication device capable of saving battery power by switching communication modeDENSO CORP·Filed 2000·Granted May 4, 2004·36 cites·19 claims
- 4080US7166375B2Magnetic recording medium utilizing a multi-layered soft magnetic underlayer, method of producing the same and magnetic recording and reproducing deviceTOSHIBA KK·Filed 2001·Granted Jan 23, 2007·14 cites·26 claims
- 4180US7105239B2Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the sameSHOWA DENKO KK·Filed 2002·Granted Sep 12, 2006·13 cites·20 claims
- 4280US5131391APulse oxymeter having probe with warming meansCOLIN ELECTRONICS·Filed 1990·Granted Jul 21, 1992·290 cites·11 claims
- 4380US4081494AProcess for preparing soft transparent polyether polyester block copolymersTEIJIN LTD·Filed 1975·Granted Mar 28, 1978·26 cites·6 claims
- 4479US5828821ACheckpoint restart method and apparatus utilizing multiple log memoriesTOSHIBA KK·Filed 1996·Granted Oct 27, 1998·97 cites·21 claims
- 4579US5224478AReflecting-type oxymeter probeCOLIN ELECTRONICS·Filed 1992·Granted Jul 6, 1993·260 cites·7 claims
- 4679US4784701AMulti-layered thin film solar cellFUJI ELECTRIC RES·Filed 1987·Granted Nov 15, 1988·44 cites·3 claims
- 4778US10986263B2Calibration method of variable focal length lens and variable focal length lens deviceMITUTOYO CORP·Filed 2019·Granted Apr 20, 2021·2 cites·5 claims
- 4878US10915000B2Variable focal length lens control method and variable focal length lens deviceMITUTOYO CORP·Filed 2019·Granted Feb 9, 2021·2 cites·17 claims
- 4978US9518011B2Recording material produced using non-phenol compoundNIPPON SODA CO·Filed 2013·Granted Dec 13, 2016·3 cites·8 claims
- 5078US7356358B2Onboard wireless communication systemDENSO CORP·Filed 2005·Granted Apr 8, 2008·10 cites·22 claims
Showing the top 50 of 326 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →