Inventor · disambiguated record
Keiji Hayashi
Also filed as: HAYASHI KEIJI
68 granted patents·56 pending applications·1,472 citations·filing 1982–2025
99Inventor score
Top patents by PatentIndex Score
124 records- 0198US7073933B2Light guide plate, light source device equipped therewith and display deviceSHARP KK·Filed 2002·Granted Jul 11, 2006·157 cites·31 claims
- 0298US6847424B2Liquid-crystal display and a lighting apparatusFUJITSU DISPLAY TECH·Filed 2001·Granted Jan 25, 2005·161 cites·6 claims
- 0396US6655810B2Lighting unitFUJITSU DISPLAY TECH·Filed 2001·Granted Dec 2, 2003·75 cites·22 claims
- 0495US6552760B1Luminaire with improved light utilization efficiencyFUJITSU LTD·Filed 2000·Granted Apr 22, 2003·89 cites·3 claims
- 0595US6379010B1Projection type displayFUJITSU LTD·Filed 1999·Granted Apr 30, 2002·57 cites·8 claims
- 0695US4819587AMultiple-purpose instantaneous gas water heaterTOTO LTD·Filed 1986·Granted Apr 11, 1989·93 cites·27 claims
- 0792US5764412APolarization separation/conversion device for polarized lighting apparatus and projection display unitFUJITSU LTD·Filed 1995·Granted Jun 9, 1998·118 cites·23 claims
- 0892US4922861AMultiple-purpose instantaneous gas water heaterTOTO LTD·Filed 1989·Granted May 8, 1990·59 cites·3 claims
- 0991US7163331B2Lighting unit and display deviceSHARP KK·Filed 2003·Granted Jan 16, 2007·47 cites·19 claims
- 1090US6481854B1Projection type display apparatus having air cooling arrangementFUJITSU LTD·Filed 1999·Granted Nov 19, 2002·107 cites·51 claims
- 1189US10301568B2Sliding systemTOYOTA MOTOR CO LTD·Filed 2017·Granted May 28, 2019·2 cites·8 claims
- 1288US7309146B2Backlight having discharge tube, reflector and heat conduction member contacting discharge tubeSHARP KK·Filed 2005·Granted Dec 18, 2007·7 cites·11 claims
- 1387US6513936B1ProjectorFUJITSU LTD·Filed 2000·Granted Feb 4, 2003·34 cites·8 claims
- 1487US4768705ACold/hot water discharging apparatusTOTO LTD·Filed 1987·Granted Sep 6, 1988·54 cites·14 claims
- 1586US4467484APneumatic cushion and manufacturing method thereforNISSAN MOTOR·Filed 1982·Granted Aug 28, 1984·55 cites·29 claims
- 1684US9790447B2Sliding systemTOYOTA MOTOR CO LTD·Filed 2015·Granted Oct 17, 2017·2 cites·11 claims
- 1783US8794779B2Lighting device, display device and television receiverHAYASHI KEIJI·Filed 2009·Granted Aug 5, 2014·7 cites·18 claims
- 1883US8049711B2Illumination device and liquid crystal display device using the sameSHARP KK·Filed 2007·Granted Nov 1, 2011·4 cites·5 claims
- 1979US8253681B2Light source device, a display device and a television receiverHAYASHI KEIJI·Filed 2006·Granted Aug 28, 2012·4 cites·20 claims
- 2079US5959704ADisplay device having diffraction gratingFUJITSU LTD·Filed 1996·Granted Sep 28, 1999·55 cites·19 claims
- 2176US7494259B2Lighting unitSHARP KK·Filed 2003·Granted Feb 24, 2009·14 cites·7 claims
- 2276US7465989B2High withstand voltage trenched MOS transistor and manufacturing method thereofSHARP KK·Filed 2007·Granted Dec 16, 2008·5 cites·9 claims
- 2376US7169005B2Method of producing a backlight having a discharge tube containing mercurySHARP KK·Filed 2005·Granted Jan 30, 2007·3 cites·5 claims
- 2475US6037054ASheet for protecting paint filmNITTO DENKO CORP·Filed 1997·Granted Mar 14, 2000·34 cites·5 claims
- 2573US9062274B2Low friction sliding memberMORI HIROYUKI·Filed 2010·Granted Jun 23, 2015·2 cites·5 claims
- 2672US8111225B2Liquid crystal display device having a plurality of subfieldsHAYASHI KEIJI·Filed 2010·Granted Feb 7, 2012·2 cites·1 claims
- 2771US7541723B2Backlight having a polarization separating elementSHARP KK·Filed 2005·Granted Jun 2, 2009·5 cites·9 claims
- 2871US7164224B2Backlight having discharge tube, reflector and heat conduction member contacting discharge tubeSHARP KK·Filed 2001·Granted Jan 16, 2007·8 cites·6 claims
- 2970US8791966B2Display device and electric apparatusHAYASHI KEIJI·Filed 2008·Granted Jul 29, 2014·3 cites·7 claims
- 3070US7719502B2Liquid crystal display device and television receiver setFUJITSU LTD·Filed 2005·Granted May 18, 2010·3 cites·20 claims
- 3170US5601917APaint film-protective sheetNITTO DENKO CORP·Filed 1995·Granted Feb 11, 1997·34 cites·7 claims
- 3268US8267536B2Power supply unit and display deviceHAYASHI KEIJI·Filed 2008·Granted Sep 18, 2012·2 cites·9 claims
- 3367US12036004B2Physiological state index calculation system, physiological state index calculation method, and non-transitory computer readable mediumTOYOTA MOTOR CO LTD·Filed 2022·Granted Jul 16, 2024·0 cites·11 claims
- 3466US9212597B2Coolant composition for internal combustion engine and method for operating internal combustion engineHIRAI TAKUYA·Filed 2012·Granted Dec 15, 2015·1 cites·12 claims
- 3566US6819366B2Display device with condenser elementsFUJITSU LTD·Filed 2003·Granted Nov 16, 2004·8 cites·3 claims
- 3666US2025204864A1Physiological state estimation system, physiological state estimation method, and non-transitory computer readable mediumTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3766US2025213195A1Brain wave detection system, brain wave detection method and non-transitory storage medium storing noise reduction processing programTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3866US2025213425A1Physiological state control system, physiological state control method, and non-transitory computer readable mediumTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3963US9089930B2Surface protection sheet for laser material processingHANAKI IKKOU·Filed 2010·Granted Jul 28, 2015·2 cites·1 claims
- 4062US7843020B2High withstand voltage transistor and manufacturing method thereof, and semiconductor device adopting high withstand voltage transistorSHARP KK·Filed 2007·Granted Nov 30, 2010·1 cites·4 claims
- 4162US7015632B2Light source device, method of producing the same, and display apparatusFUJITSU KASEI KK·Filed 2002·Granted Mar 21, 2006·8 cites·18 claims
- 4261US8363056B2Content generation system, content generation device, and content generation programEARNET CO LTD·Filed 2008·Granted Jan 29, 2013·2 cites·8 claims
- 4361US2014004343A1Surface protective sheetNITTO DENKO CORP·Filed 2013·Application pending·0 cites
- 4461US2013344328A1Surface protective sheetNITTO DENKO CORP·Filed 2013·Application pending·0 cites
- 4561US2013344327A1Surface protective sheetNITTO DENKO CORP·Filed 2013·Application pending·0 cites
- 4661US2013344288A1Surface protective sheetNITTO DENKO CORP·Filed 2013·Application pending·0 cites
- 4759US8556455B2Lighting device, display device and television receiverHAYASHI KEIJI·Filed 2009·Granted Oct 15, 2013·1 cites·8 claims
- 4859US6358600B1Sheet for protecting paint filmNITTO DENKO CORP·Filed 1998·Granted Mar 19, 2002·22 cites·6 claims
- 4959US4739923AHot/cold water mixing deviceTOTO LTD·Filed 1987·Granted Apr 26, 1988·21 cites·6 claims
- 5059US2008068331A1Liquid crystal display and method of manufacturing the sameSHARP KK·Filed 2007·Application pending·0 cites
Showing the top 50 of 124 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →