Inventor · disambiguated record
Akira Sakai
Also filed as: MATSUDA YOSHIMI · MATSUMURA JUBE · SAKAI AKIRA
247 granted patents·95 pending applications·2,987 citations·filing 1976–2025
99Inventor score
Top patents by PatentIndex Score
342 records- 0199US10146093B2Mirror displaySHARP KK·Filed 2016·Granted Dec 4, 2018·41 cites·4 claims
- 0296US6252261B1GaN crystal film, a group III element nitride semiconductor wafer and a manufacturing process thereforNEC CORP·Filed 1999·Granted Jun 26, 2001·319 cites·61 claims
- 0394US9684204B2Mirror display, half mirror plate, and electronic deviceSHARP KK·Filed 2014·Granted Jun 20, 2017·14 cites·20 claims
- 0493US5720826APhotovoltaic element and fabrication process thereofCANON KK·Filed 1996·Granted Feb 24, 1998·132 cites·42 claims
- 0592US11846365B2Solenoid valveDENSO CORP·Filed 2022·Granted Dec 19, 2023·2 cites·7 claims
- 0692US6913326B1Apparatus for increasing brake cylinder pressure by controlling pump motor and reducing the pressure by controlling electric energy applied to control valveTOYOTA MOTOR CO LTD·Filed 1999·Granted Jul 5, 2005·64 cites·40 claims
- 0791US8531765B2Circularly polarizing plate and display deviceSAKAI AKIRA·Filed 2009·Granted Sep 10, 2013·14 cites·14 claims
- 0891US5895100ABrake apparatus for an electric vehicle to maximize regenerative energyTOYOTA MOTOR CO LTD·Filed 1997·Granted Apr 20, 1999·111 cites·8 claims
- 0991US5589007APhotovoltaic elements and process and apparatus for their formationCANON KK·Filed 1995·Granted Dec 31, 1996·112 cites·21 claims
- 1090US7948591B2Retardation film, polarizing film, liquid crystal display, and method of designing retardation filmSHARP KK·Filed 2005·Granted May 24, 2011·15 cites·20 claims
- 1190US6858308B2Semiconductor element, and method of forming silicon-based filmCANON KK·Filed 2002·Granted Feb 22, 2005·54 cites·85 claims
- 1290US6855621B2Method of forming silicon-based thin film, method of forming silicon-based semiconductor layer, and photovoltaic elementCANON KK·Filed 2001·Granted Feb 15, 2005·48 cites·8 claims
- 1390US5984432APressure control apparatus including seating valve controlled by electric current incremented upon valve opening depending upon pressure difference across the valveTOYOTA MOTOR CO LTD·Filed 1998·Granted Nov 16, 1999·52 cites·23 claims
- 1490US5385863AMethod of manufacturing polysilicon film including recrystallization of an amorphous filmNEC CORP·Filed 1992·Granted Jan 31, 1995·128 cites·7 claims
- 1589US6794275B2Process for forming a silicon-based film on a substrate using a temperature gradient across the substrate axisCANON KK·Filed 2002·Granted Sep 21, 2004·48 cites·37 claims
- 1689US5367279AOvercurrent protection deviceTEXAS INSTRUMENTS INC·Filed 1993·Granted Nov 22, 1994·52 cites·11 claims
- 1788US7085382B2Communication device, communication device set, authentication method and method of wireless-connecting terminalsNEC CORP·Filed 2000·Granted Aug 1, 2006·59 cites·3 claims
- 1887US11550187B2Liquid crystal display deviceSHARP DISPLAY TECHNOLOGY CORP·Filed 2022·Granted Jan 10, 2023·1 cites·6 claims
- 1987US6399411B1Method for forming non-single-crystal semiconductor thin film, and method for producing photovoltaic deviceCANON KK·Filed 2000·Granted Jun 4, 2002·35 cites·6 claims
- 2087US5893325AScreen printing apparatusSAKURAI GRAPHIC SYSTEMS CORP·Filed 1997·Granted Apr 13, 1999·30 cites·20 claims
- 2187US4235481ABearing device for internal combustion engineTAIHO KOGYO CO LTD·Filed 1978·Granted Nov 25, 1980·33 cites·18 claims
- 2286US8031308B2Retardation film, polarizing film, liquid crystal display, and method of designing retardation filmSHARP KK·Filed 2011·Granted Oct 4, 2011·3 cites·8 claims
- 2386US6231134B1Vehicle braking system having frictional and regenerative braking devicesTOYOTA MOTOR CO LTD·Filed 1998·Granted May 15, 2001·125 cites·17 claims
- 2485US10921638B2Display device, electronic apparatus, semi-transmissive reflection plate, and electrical apparatusSHARP KK·Filed 2017·Granted Feb 16, 2021·2 cites·11 claims
- 2585US8488091B2Liquid crystal display deviceSAKAI AKIRA·Filed 2010·Granted Jul 16, 2013·5 cites·7 claims
- 2684US10234727B2Mirror display comprising a half mirror plate including a reflective polarizer and a polarization conversion layerSHARP KK·Filed 2015·Granted Mar 19, 2019·2 cites·10 claims
- 2784US8416377B2Liquid crystal display device with birefringent layersSAKAI AKIRA·Filed 2011·Granted Apr 9, 2013·3 cites·12 claims
- 2884US6142586ABrake force control apparatusTOYOTA MOTOR CO LTD·Filed 1998·Granted Nov 7, 2000·34 cites·8 claims
- 2983US9238453B2Master cylinder deviceUECHI MASAAKI·Filed 2011·Granted Jan 19, 2016·6 cites·17 claims
- 3082US12220644B2Watching system, computer program for watching system, and control method for watching systemKONAMI DIGITAL ENTERTAINMENT CO LTD·Filed 2022·Granted Feb 11, 2025·1 cites·11 claims
- 3182US10042201B2Liquid crystal display deviceSHARP KK·Filed 2015·Granted Aug 7, 2018·2 cites·7 claims
- 3282US8194212B2Liquid crystal display device with quarter plates and birefringent layers and liquid crystal having substantially vertical alignments in black stateSAKAI AKIRA·Filed 2009·Granted Jun 5, 2012·8 cites·5 claims
- 3381US8814369B2Optical member with plate-crystal film, method for producing same, and optical systemSAKAI AKIRA·Filed 2011·Granted Aug 26, 2014·5 cites·12 claims
- 3481US8139188B2Retardation film, polarizing film, liquid crystal display, and method of designing retardation filmSAKAI AKIRA·Filed 2011·Granted Mar 20, 2012·4 cites·12 claims
- 3580US8985283B2Vehicle brake apparatusOSHIO YUSUKE·Filed 2011·Granted Mar 24, 2015·7 cites·8 claims
- 3680US4888062APin junction photovoltaic element having I-type semiconductor layer comprising non-single crystal material containing at least Zn, Se and H in an amount of 1 to 4 atomic %CANON KK·Filed 1988·Granted Dec 19, 1989·37 cites·8 claims
- 3779US4959106APhotovoltaic element with a semiconductor layer comprising non-single crystal material containing at least ZN, SE and H in an amount of 1 to 4 atomic %CANON KK·Filed 1989·Granted Sep 25, 1990·49 cites·9 claims
- 3878US8314908B2Liquid crystal display device with quarter plates and birefringent layers and liquid crystal having substantially vertical alignments in black stateSAKAI AKIRA·Filed 2012·Granted Nov 20, 2012·3 cites·6 claims
- 3978US6992827B2Antiglare film, method for fabricating the same, polarizer element and display device employing the same, and internal diffusion filmSHARP KK·Filed 2002·Granted Jan 31, 2006·19 cites·11 claims
- 4078US6636774B2CAD supporting apparatus, and CAD supporting program storage mediumFUJITSU LTD·Filed 2001·Granted Oct 21, 2003·30 cites·10 claims
- 4178US5979997AHydraulic brake control apparatusTOYOTA MOTOR CO LTD·Filed 1997·Granted Nov 9, 1999·30 cites·10 claims
- 4278US5968274AContinuous forming method for functional deposited films and deposition apparatusCANON KK·Filed 1996·Granted Oct 19, 1999·46 cites·15 claims
- 4378US5709585AMethod and apparatus for removing burrs from joined billets in a continuous rolling processNIPPON KOKAN KK·Filed 1996·Granted Jan 20, 1998·18 cites·18 claims
- 4477US11982896B2Liquid crystal display device and polarizing plateSHARP KK·Filed 2023·Granted May 14, 2024·0 cites·20 claims
- 4577US11676361B2Computer-readable recording medium having stored therein training program, training method, and information processing apparatusFUJITSU LTD·Filed 2021·Granted Jun 13, 2023·1 cites·18 claims
- 4677US9746072B2Oil pressure control deviceDENSO CORP·Filed 2016·Granted Aug 29, 2017·2 cites·6 claims
- 4777US9272694B2Hydraulic braking systemKAMIYA YUSUKE·Filed 2013·Granted Mar 1, 2016·4 cites·8 claims
- 4877US6653165B2Methods of forming semiconductor element, and semiconductor elementsCANON KK·Filed 2002·Granted Nov 25, 2003·22 cites·20 claims
- 4977US5548986AMethod and apparatus for simultaneously forming at least four metal roundsSTRUCTURAL METALS INC·Filed 1994·Granted Aug 27, 1996·22 cites·24 claims
- 5077US4939363AScanning tunneling microscopeAGENCY IND SCIENCE TECHN·Filed 1989·Granted Jul 3, 1990·33 cites·8 claims
Showing the top 50 of 342 patent records by PatentIndex Score.
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