Inventor · disambiguated record
Kohei Oikawa
Also filed as: OIKAWA KOHEI
50 granted patents·10 pending applications·125 citations·filing 2002–2025
97Inventor score
Top patents by PatentIndex Score
60 records- 0189US11868615B2Compression device and control methodKIOXIA CORP·Filed 2021·Granted Jan 9, 2024·2 cites·15 claims
- 0289US11714552B2Memory systemKIOXIA CORP·Filed 2021·Granted Aug 1, 2023·2 cites·44 claims
- 0388US12411602B2Memory systemKIOXIA CORP·Filed 2023·Granted Sep 9, 2025·1 cites·15 claims
- 0481US6744305B2Power supply circuit having value of output voltage adjustedTOSHIBA KK·Filed 2002·Granted Jun 1, 2004·30 cites·31 claims
- 0577US7913013B2Semiconductor integrated circuitTOSHIBA KK·Filed 2008·Granted Mar 22, 2011·8 cites·20 claims
- 0675US7053696B2Semiconductor device with resistor elementTOSHIBA KK·Filed 2003·Granted May 30, 2006·18 cites·15 claims
- 0773US12499041B2Memory system limiting range of scan in garbage collectionKIOXIA CORP·Filed 2024·Granted Dec 16, 2025·0 cites·19 claims
- 0873US9971523B2Memory controller with data compression and padding features, method of controlling nonvolatile memory and memory systemTOSHIBA MEMORY CORP·Filed 2016·Granted May 15, 2018·2 cites·17 claims
- 0971US7650521B2Semiconductor integrated circuit having a first power supply region and a second power supply region in which power supply voltage changesTOSHIBA KK·Filed 2007·Granted Jan 19, 2010·4 cites·9 claims
- 1070US10482025B2Memory system managing access to nonvolatile memoryTOSHIBA MEMORY CORP·Filed 2017·Granted Nov 19, 2019·1 cites·19 claims
- 1169US12108064B2Memory systemKIOXIA CORP·Filed 2023·Granted Oct 1, 2024·0 cites·29 claims
- 1268US12511194B2Memory system and methodKIOXIA CORP·Filed 2024·Granted Dec 30, 2025·0 cites·20 claims
- 1368US9423979B2Memory system and memory controller for determining whether one or plurality of pointers can be stored in a second buffer and for executing data transfer between data buffer and host using the pointersTOSHIBA KK·Filed 2014·Granted Aug 23, 2016·2 cites·16 claims
- 1466US7272743B2Semiconductor integrated circuitTOSHIBA KK·Filed 2004·Granted Sep 18, 2007·9 cites·7 claims
- 1564US11818376B2Memory systemKIOXIA CORP·Filed 2022·Granted Nov 14, 2023·0 cites·25 claims
- 1663US9043672B2Memory controller, storage device, and memory control methodTOSHIBA KK·Filed 2013·Granted May 26, 2015·1 cites·9 claims
- 1759US11824566B2Data decompression device, data compression device, and memory systemKIOXIA CORP·Filed 2022·Granted Nov 21, 2023·0 cites·16 claims
- 1859US11431995B2Memory systemKIOXIA CORP·Filed 2020·Granted Aug 30, 2022·0 cites·29 claims
- 1959US7610504B2Semiconductor integrated circuitTOSHIBA KK·Filed 2007·Granted Oct 27, 2009·1 cites·13 claims
- 2059US2025299735A1Semiconductor device and storage mediumKIOXIA CORP·Filed 2025·Application pending·0 cites
- 2158US10719395B2Memory systemTOSHIBA MEMORY CORP·Filed 2018·Granted Jul 21, 2020·1 cites·20 claims
- 2258US8977890B2Memory system and control methodOIKAWA KOHEI·Filed 2012·Granted Mar 10, 2015·1 cites·20 claims
- 2358US7154766B2Ferroelectric memoryTOSHIBA KK·Filed 2004·Granted Dec 26, 2006·10 cites·18 claims
- 2457US12487773B2Memory systemKIOXIA CORP·Filed 2023·Granted Dec 2, 2025·0 cites·19 claims
- 2557US8429339B2Storage device utilizing free pages in compressed blocksOIKAWA KOHEI·Filed 2011·Granted Apr 23, 2013·1 cites·6 claims
- 2657US6901026B2Semiconductor integrated circuit equipment with asynchronous operationTOSHIBA KK·Filed 2003·Granted May 31, 2005·10 cites·26 claims
- 2756US11899934B2Compression device, compression and decompression device, and memory systemKIOXIA CORP·Filed 2022·Granted Feb 13, 2024·0 cites·19 claims
- 2855US10915454B2Memory device and cache control methodTOSHIBA MEMORY CORP·Filed 2019·Granted Feb 9, 2021·0 cites·20 claims
- 2951US11651833B2Error detection in memory systemKIOXIA CORP·Filed 2022·Granted May 16, 2023·0 cites·20 claims
- 3049US12001339B2Dictionary compression device and memory systemKIOXIA CORP·Filed 2022·Granted Jun 4, 2024·0 cites·17 claims
- 3149US11588498B2Character string search device and memory systemKIOXIA CORP·Filed 2021·Granted Feb 21, 2023·0 cites·15 claims
- 3249US9003261B2Memory systemTOSHIBA KK·Filed 2013·Granted Apr 7, 2015·0 cites·20 claims
- 3348US11609844B2Memory system with hierarchical tablesKIOXIA CORP·Filed 2020·Granted Mar 21, 2023·0 cites·13 claims
- 3448US10489243B2Memory controller and memory systemTOSHIBA MEMORY CORP·Filed 2017·Granted Nov 26, 2019·0 cites·20 claims
- 3547US11397546B2Memory systemKIOXIA CORP·Filed 2020·Granted Jul 26, 2022·0 cites·17 claims
- 3647US7046540B2Semiconductor integrated circuit device and information storage method thereforTOSHIBA KK·Filed 2003·Granted May 16, 2006·5 cites·16 claims
- 3747US7016216B2Ferroelectric memory device having ferroelectric capacitor and method of reading out data therefromTOSHIBA KK·Filed 2003·Granted Mar 21, 2006·5 cites·13 claims
- 3847US6765831B2Semiconductor integrated circuit deviceTOSHIBA KK·Filed 2003·Granted Jul 20, 2004·5 cites·18 claims
- 3946US2015067291A1Controller, memory system, and methodTOSHIBA KK·Filed 2014·Application pending·0 cites
- 4045US11742876B2Compression device and decompression deviceKIOXIA CORP·Filed 2022·Granted Aug 29, 2023·0 cites·25 claims
- 4145US11309909B2Compression device, decompression device, and methodKIOXIA CORP·Filed 2020·Granted Apr 19, 2022·0 cites·36 claims
- 4245US10204043B2Memory controller, method of controlling nonvolatile memory and memory systemTOSHIBA MEMORY CORP·Filed 2017·Granted Feb 12, 2019·0 cites·20 claims
- 4344US7127598B2Semiconductor device comprising transition detecting circuit and method of activating the sameINFINEON TECHNOLOGIES AG·Filed 2002·Granted Oct 24, 2006·0 cites·10 claims
- 4444US2005172177A1Semiconductor memory device for correcting errors using ECC (error correcting code) circuitFiled 2004·Application pending·0 cites
- 4543US11561738B2Memory systemKIOXIA CORP·Filed 2021·Granted Jan 24, 2023·0 cites·15 claims
- 4643US9412455B2Data write control device and data storage deviceTOSHIBA KK·Filed 2014·Granted Aug 9, 2016·0 cites·20 claims
- 4742US7002871B2Asynchronous pseudo SRAM and access method thereforTOSHIBA KK·Filed 2004·Granted Feb 21, 2006·3 cites·21 claims
- 4841US11777518B2Data compression device, memory system and methodKIOXIA CORP·Filed 2022·Granted Oct 3, 2023·0 cites·14 claims
- 4941US6744302B2Voltage generator circuit for use in a semiconductor deviceTOSHIBA KK·Filed 2002·Granted Jun 1, 2004·3 cites·21 claims
- 5040US11381250B2Decode deviceKIOXIA CORP·Filed 2020·Granted Jul 5, 2022·0 cites·20 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →