Inventor · disambiguated record
Nagamasa Mizushima
Also filed as: MIZUSHIMA NAGAMASA
52 granted patents·7 pending applications·867 citations·filing 2000–2024
98Inventor score
Files withHITACHI LTD35RENESAS TECH CORP11MIZUSHIMA NAGAMASA5ASAHI TAKESHI1HITACHI INDUSTRY & CONTROL SOLUTIONS LTD1
Top patents by PatentIndex Score
59 records- 0198US7761655B2Storage system and method of preventing deterioration of write performance in storage systemHITACHI LTD·Filed 2008·Granted Jul 20, 2010·111 cites·17 claims
- 0298US7571277B2Semiconductor memory system for flash memoryHITACHI LTD·Filed 2006·Granted Aug 4, 2009·111 cites·10 claims
- 0397US7558110B2IC module and cellular phoneRENESAS TECH CORP·Filed 2007·Granted Jul 7, 2009·84 cites·28 claims
- 0494US9116858B1Direct memory access with conversion or reverse conversion of dataHITACHI LTD·Filed 2014·Granted Aug 25, 2015·25 cites·17 claims
- 0593US11829600B2Storage system and data processing method using data compressionHITACHI LTD·Filed 2022·Granted Nov 28, 2023·2 cites·11 claims
- 0692US7708195B2Memory cardRENESAS TECH CORP·Filed 2006·Granted May 4, 2010·32 cites·21 claims
- 0792US7162645B2Storage device including a non-volatile memoryRENESAS TECH CORP·Filed 2002·Granted Jan 9, 2007·89 cites·15 claims
- 0891US7054990B1External storage device using non-volatile semiconductor memoryRENESAS TECH CORP·Filed 2000·Granted May 30, 2006·75 cites·21 claims
- 0990US8151060B2Semiconductor memory system having a snapshot functionMIZUSHIMA NAGAMASA·Filed 2007·Granted Apr 3, 2012·20 cites·18 claims
- 1089US8015417B2Remote access system, gateway, client device, program, and storage mediumHITACHI LTD·Filed 2005·Granted Sep 6, 2011·20 cites·8 claims
- 1187US7469837B2Storage deviceRENESAS TECH CORP·Filed 2006·Granted Dec 30, 2008·19 cites·10 claims
- 1286US7831764B2Storage system having plural flash memory drives and method for controlling data storageHITACHI LTD·Filed 2008·Granted Nov 9, 2010·17 cites·20 claims
- 1384US6459644B2Semiconductor memory device with block alignment functionHITACHI LTD·Filed 2001·Granted Oct 1, 2002·41 cites·9 claims
- 1483US7185145B2Memory cardRENESAS TECH CORP·Filed 2002·Granted Feb 27, 2007·28 cites·7 claims
- 1582US11360669B2Storage device accelerator providing aggregation of divided plaintext dataHITACHI LTD·Filed 2021·Granted Jun 14, 2022·1 cites·11 claims
- 1682US6915427B2Hub apparatus with copyright protection functionHITACHI LTD·Filed 2001·Granted Jul 5, 2005·30 cites·7 claims
- 1781US7650503B2Memory cardRENESAS TECH CORP·Filed 2007·Granted Jan 19, 2010·8 cites·9 claims
- 1880US8677213B2Electronic device comprising error correction coding device and electronic device comprising error correction decoding deviceMIZUSHIMA NAGAMASA·Filed 2011·Granted Mar 18, 2014·7 cites·13 claims
- 1980US8612830B2Method of correcting error of flash memory device, and, flash memory device and storage system using the sameKITAHARA JUN·Filed 2008·Granted Dec 17, 2013·10 cites·22 claims
- 2080US7694067B2Memory cardRENESAS TECH CORP·Filed 2008·Granted Apr 6, 2010·7 cites·20 claims
- 2180US7281101B2Memory device storing data relating to specific application programsRENESAS TECH CORP·Filed 2004·Granted Oct 9, 2007·57 cites·24 claims
- 2279US11455122B2Storage system and data compression method for storage systemHITACHI LTD·Filed 2020·Granted Sep 27, 2022·1 cites·14 claims
- 2379US7415729B2Storage deviceHITACHI LTD·Filed 2003·Granted Aug 19, 2008·28 cites·19 claims
- 2479US2024319923A1Apparatus for processing received dataHITACHI LTD·Filed 2024·Application pending·0 cites
- 2578US7303136B2Storage deviceRENESAS TECH CORP·Filed 2004·Granted Dec 4, 2007·14 cites·19 claims
- 2677US8417896B2Semiconductor memory system having a snapshot functionMIZUSHIMA NAGAMASA·Filed 2012·Granted Apr 9, 2013·3 cites·20 claims
- 2777US7350023B2Memory cardRENESAS TECH CORP·Filed 2006·Granted Mar 25, 2008·6 cites·32 claims
- 2876US12019921B2Apparatus for processing received dataHITACHI LTD·Filed 2023·Granted Jun 25, 2024·0 cites·14 claims
- 2976US11481114B2Storage apparatus and control method of storage apparatusHITACHI LTD·Filed 2016·Granted Oct 25, 2022·2 cites·13 claims
- 3074US12353712B2Storage deviceHITACHI LTD·Filed 2023·Granted Jul 8, 2025·0 cites·7 claims
- 3171US9098202B2Storage apparatus and data management methodYOKOI NOBUHIRO·Filed 2012·Granted Aug 4, 2015·4 cites·12 claims
- 3270US11640265B2Apparatus for processing received dataHITACHI LTD·Filed 2021·Granted May 2, 2023·0 cites·13 claims
- 3369US11625168B2Storage device accelerator providing aggregation of divided plaintext data readHITACHI LTD·Filed 2022·Granted Apr 11, 2023·0 cites·15 claims
- 3469US11119702B1Apparatus for processing received dataHITACHI LTD·Filed 2021·Granted Sep 14, 2021·0 cites·15 claims
- 3569US9479194B2Data compression apparatus and data decompression apparatusHITACHI LTD·Filed 2013·Granted Oct 25, 2016·2 cites·8 claims
- 3669US8510572B2Remote access system, gateway, client device, program, and storage mediumKATO TAKATOSHI·Filed 2007·Granted Aug 13, 2013·4 cites·12 claims
- 3768US9727246B2Memory device, computer system, and method of controlling memory deviceHITACHI LTD·Filed 2013·Granted Aug 8, 2017·2 cites·12 claims
- 3867US9092320B2Storage system which includes non-volatile semiconductor storage medium, and storage control method of storage systemHITACHI LTD·Filed 2012·Granted Jul 28, 2015·2 cites·7 claims
- 3963US10444992B2Storage device, apparatus having storage device, and storage control methodHITACHI LTD·Filed 2014·Granted Oct 15, 2019·1 cites·15 claims
- 4063US10102060B2Storage apparatus and data control method of storing data with an error correction codeHITACHI LTD·Filed 2013·Granted Oct 16, 2018·1 cites·9 claims
- 4161US12430475B2Computer and data processing methodHITACHI LTD·Filed 2023·Granted Sep 30, 2025·0 cites·15 claims
- 4260US8312203B2Semiconductor storage device and method of controlling a semiconductor storage device by allocating a physical block composed of plural pages to a group of logical addressesMIZUSHIMA NAGAMASA·Filed 2008·Granted Nov 13, 2012·2 cites·5 claims
- 4359US2025291482A1Storage systemHITACHI VANTARA LTD·Filed 2024·Application pending·0 cites
- 4458US9021212B2Semiconductor memory system having a snapshot functionHITACHI LTD·Filed 2014·Granted Apr 28, 2015·0 cites·20 claims
- 4557US12073080B2System and method for improving reliability of a data storage systemHITACHI LTD·Filed 2022·Granted Aug 27, 2024·0 cites·8 claims
- 4656US8683141B2Semiconductor memory system having a snapshot functionHITACHI LTD·Filed 2013·Granted Mar 25, 2014·0 cites·14 claims
- 4756US2024385762A1Storage systemHITACHI LTD·Filed 2023·Application pending·0 cites
- 4852US11275505B2Storage systemHITACHI LTD·Filed 2020·Granted Mar 15, 2022·0 cites·11 claims
- 4950US7100055B2Information storage system, information transfer system and storage medium thereofHITACHI LTD·Filed 2001·Granted Aug 29, 2006·1 cites·8 claims
- 5049US10067828B2Memory controller and data control methodHITACHI LTD·Filed 2014·Granted Sep 4, 2018·0 cites·8 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
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