Inventor · disambiguated record
Naoki Matsui
Also filed as: KARIYA KYOJI · MATSUI NAOKI
47 granted patents·18 pending applications·757 citations·filing 1990–2025
98Inventor score
Files withNIPPON STEEL & SUMITOMO METAL CORP13FUJITSU LTD8MINOLTA CO LTD8KYOCERA CORP7NIPPON STEEL CORP6
Top patents by PatentIndex Score
65 records- 0192US5874932APlasma display deviceFUJITSU LTD·Filed 1994·Granted Feb 23, 1999·110 cites·19 claims
- 0290US6249265B1Intraframe time-division multiplexing type display device and a method of displaying gray-scales in an intraframe time-division multiplexing type display deviceFUJITSU LTD·Filed 1999·Granted Jun 19, 2001·82 cites·86 claims
- 0390US6222512B1Intraframe time-division multiplexing type display device and a method of displaying gray-scales in an intraframe time-division multiplexing type display deviceFUJITSU LTD·Filed 1996·Granted Apr 24, 2001·86 cites·5 claims
- 0488US9994943B2Rolled steel bar for hot forging, hot-forged section material, and common rail and method for producing the sameNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Jun 12, 2018·2 cites·2 claims
- 0587US6636187B2Display and method of driving the display capable of reducing current and power consumption without deteriorating quality of displayed imagesFUJITSU LTD·Filed 1998·Granted Oct 21, 2003·89 cites·36 claims
- 0687US6545395B2Piezoelectric conversion element having an electroded surface with a non-electrode surface portion at an end thereofMINOLTA CO LTD·Filed 2001·Granted Apr 8, 2003·42 cites·17 claims
- 0786US10764449B2Maintenance system for performing maintenance of image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2019·Granted Sep 1, 2020·4 cites·2 claims
- 0886US9936604B2Optional device for electrical applianceKONICA MINOLTA INC·Filed 2016·Granted Apr 3, 2018·3 cites·8 claims
- 0983US11921365B2Isolator, method of manufacturing isolator, electromagnetic wave transmitter, and light transmitterKYOCERA CORP·Filed 2020·Granted Mar 5, 2024·1 cites·10 claims
- 1083US6142607AInk-jet recording headMINOLTA CO LTD·Filed 1997·Granted Nov 7, 2000·48 cites·10 claims
- 1181US10976564B2Isolator, light source device, optical transmitter, and optical amplifierKYOCERA CORP·Filed 2018·Granted Apr 13, 2021·3 cites·17 claims
- 1281US9951403B2Hot-forged section material and common railNIPPON STEEL & SUMITOMO METAL CORP·Filed 2013·Granted Apr 24, 2018·2 cites·4 claims
- 1381US9574255B2Rolled steel bar for hot forgingNIPPON STEEL & SUMITOMO METAL CORP·Filed 2012·Granted Feb 21, 2017·2 cites·2 claims
- 1479US6838048B2Steel for machine structural use and method of producing sameSUMITOMO METAL IND·Filed 2002·Granted Jan 4, 2005·12 cites·8 claims
- 1577US10837080B2Rolled steel bar or rolled wire rod for cold-forged componentNIPPON STEEL CORP·Filed 2015·Granted Nov 17, 2020·1 cites·5 claims
- 1676US12248207B2Isolator, method of manufacturing isolator, electromagnetic wave transmitter, and light transmitterKYOCERA CORP·Filed 2024·Granted Mar 11, 2025·0 cites·4 claims
- 1774US6042219AInk-jet recording headMINOLTA CO LTD·Filed 1997·Granted Mar 28, 2000·30 cites·10 claims
- 1873US6797231B2Steel for machine structural useSUMITOMO METAL IND·Filed 2002·Granted Sep 28, 2004·8 cites·4 claims
- 1973US6522314B1Flat display panel having internal power supply circuit for reducing power consumptionFUJITSU LTD·Filed 1998·Granted Feb 18, 2003·36 cites·17 claims
- 2072US5898414ADisplay method for intermediate gray scale and display apparatus for expressing intermediate gray scaleFUJITSU LTD·Filed 1997·Granted Apr 27, 1999·40 cites·25 claims
- 2171US2024243283A1Negative electrode active material for fluoride ion battery, negative electrode active material layer for fluoride ion battery, fluoride ion battery, and method for producing negative electrode active material for fluoride ion batteryTOYOTA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 2270US6982749B2Remote control camera system and image transmission methodMINOLTA CO LTD·Filed 2001·Granted Jan 3, 2006·9 cites·2 claims
- 2369US10787332B2Sheet conveyance apparatus and image forming apparatus including the sameKONICA MINOLTA INC·Filed 2018·Granted Sep 29, 2020·1 cites·9 claims
- 2467US6144349APlasma display deviceFUJITSU LTD·Filed 1998·Granted Nov 7, 2000·35 cites·23 claims
- 2567US6107978APlasma display having variable scan line pulses to reduce flickeringFUJITSU LTD·Filed 1996·Granted Aug 22, 2000·32 cites·29 claims
- 2666US9815642B2Sheet material feeding device and image forming apparatusKONICA MINOLTA INC·Filed 2017·Granted Nov 14, 2017·1 cites·14 claims
- 2766US2024166513A1Hydride ion conductorAGC INC·Filed 2024·Application pending·0 cites
- 2866US2024399789A1Railway wheelNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 2965US2024181806A1Railway wheelNIPPON STEEL CORP·Filed 2022·Application pending·0 cites
- 3064US12007632B2Optical isolator and light source deviceKYOCERA CORP·Filed 2020·Granted Jun 11, 2024·0 cites·13 claims
- 3164US7068264B2Flat display panel having internal power supply circuit for reducing power consumptionHITACHI LTD·Filed 2001·Granted Jun 27, 2006·7 cites·14 claims
- 3261US2009303221A1Flat display panel having internal power supply circuit for reducing power consumptionHITACHI HPPL·Filed 2009·Application pending·0 cites
- 3360US2025092496A1Steel materialNIPPON STEEL CORP·Filed 2023·Application pending·0 cites
- 3459US2025379235A1Fluoride ion conductor, negative electrode mixture and fluoride ion batteryTOYOTA MOTOR CO LTD·Filed 2025·Application pending·0 cites
- 3558US11098394B2Rolled wire rodNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Granted Aug 24, 2021·0 cites·7 claims
- 3658US8240659B2Post-processing apparatus and image forming system having post-processing apparatusOSHIMA KEISUKE·Filed 2011·Granted Aug 14, 2012·1 cites·15 claims
- 3758US2024166512A1Hydride ion conductorAGC INC·Filed 2024·Application pending·0 cites
- 3857US6305791B1Ink-jet recording deviceMINOLTA CO LTD·Filed 1997·Granted Oct 23, 2001·16 cites·48 claims
- 3957US6278222B1Piezoelectric element, piezoelectric element manufacturing method and actuator using piezoelectric elementMINOLTA CO LTD·Filed 1999·Granted Aug 21, 2001·16 cites·14 claims
- 4056US8463159B2Image forming unit and image forming apparatus including elastically deformable charging rollerNAKAGAMI HIDEKAZU·Filed 2009·Granted Jun 11, 2013·2 cites·16 claims
- 4155US12111522B2Isolator, light source apparatus, optical transceiver, optical switch, optical amplifier, and data centerKYOCERA CORP·Filed 2019·Granted Oct 8, 2024·0 cites·20 claims
- 4255US11521403B2Image processing device for a read image of an originalKYOCERA DOCUMENT SOLUTIONS INC·Filed 2021·Granted Dec 6, 2022·0 cites·4 claims
- 4354US7592976B2Flat display panel having internal power supply circuit for reducing power consumptionHITACHI HPPL·Filed 2006·Granted Sep 22, 2009·0 cites·7 claims
- 4452US10917619B2Display apparatus, display system, moveable body, and display methodKYOCERA CORP·Filed 2017·Granted Feb 9, 2021·0 cites·22 claims
- 4551US10487372B2High-strength boltNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Nov 26, 2019·0 cites·8 claims
- 4650US5182074AApparatus for continuously cooling metal stripNIPPON KOKAN KK·Filed 1991·Granted Jan 26, 1993·9 cites·20 claims
- 4749US10669604B2BoltNIPPON STEEL & SUMITOMO METAL CORP·Filed 2016·Granted Jun 2, 2020·0 cites·8 claims
- 4849US2020354810A1High-strength steel wireNIPPON STEEL & SUMITOMO METAL CORP·Filed 2017·Application pending·0 cites
- 4948US11782219B2Optical switchKYOCERA CORP·Filed 2019·Granted Oct 10, 2023·0 cites·7 claims
- 5048US10582627B2Optional device for electrical machine, and electrical machineKONICA MINOLTA INC·Filed 2016·Granted Mar 3, 2020·0 cites·11 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →