Inventor · disambiguated record
Hiroaki Akutsu
Also filed as: AKUTSU HIROAKI
74 granted patents·12 pending applications·228 citations·filing 2006–2025
98Inventor score
Top patents by PatentIndex Score
86 records- 0197US10185624B2Distributed storage systemHITACHI LTD·Filed 2017·Granted Jan 22, 2019·37 cites·14 claims
- 0296US10956063B2Virtual storage systemHITACHI LTD·Filed 2019·Granted Mar 23, 2021·12 cites·9 claims
- 0395US10452293B2Virtual storage systemHITACHI LTD·Filed 2017·Granted Oct 22, 2019·12 cites·19 claims
- 0495US7739540B2Information system, data transfer method and data protection methodHITACHI LTD·Filed 2007·Granted Jun 15, 2010·40 cites·14 claims
- 0592US11662953B2Data compression/decompression system, and data compression/decompression methodHITACHI LTD·Filed 2021·Granted May 30, 2023·4 cites·8 claims
- 0692US7953947B2Creating a snapshot based on a marker transferred from a first storage system to a second storage systemHITACHI LTD·Filed 2010·Granted May 31, 2011·14 cites·10 claims
- 0789US9465561B2Storage system and storage control methodHITACHI LTD·Filed 2015·Granted Oct 11, 2016·8 cites·6 claims
- 0886US7925914B2Information system, data transfer method and data protection methodHITACHI LTD·Filed 2010·Granted Apr 12, 2011·7 cites·15 claims
- 0986US7725668B2Computer system and snapshot creation method thereof, delaying snapshot creation until pending transfer between volumes is completeHITACHI LTD·Filed 2006·Granted May 25, 2010·12 cites·18 claims
- 1085US11435924B2Storage system and storage cost optimization methodHITACHI LTD·Filed 2020·Granted Sep 6, 2022·2 cites·15 claims
- 1185US9235353B2Storage apparatus and management method including determination of migration of data from one storage area to another based on access frequencyHITACHI LTD·Filed 2012·Granted Jan 12, 2016·7 cites·12 claims
- 1285US9047220B2Storage system and data management methodAKUTSU HIROAKI·Filed 2012·Granted Jun 2, 2015·8 cites·15 claims
- 1384US8819371B2Storage systemHITACHI LTD·Filed 2012·Granted Aug 26, 2014·7 cites·7 claims
- 1482US9411527B2Storage system and data management methodHITACHI LTD·Filed 2015·Granted Aug 9, 2016·3 cites·7 claims
- 1582US9176858B2Storage system configured to selectively utilize data compression based on real pool usage ratesHITACHI LTD·Filed 2012·Granted Nov 3, 2015·7 cites·15 claims
- 1682US8918609B2Storage apparatus and data management method to determine whether to migrate data from a first storage device to a second storage device based on an access frequency of a particular logical areaHITACHI LTD·Filed 2014·Granted Dec 23, 2014·5 cites·10 claims
- 1782US8880830B1Storage systemHITACHI LTD·Filed 2014·Granted Nov 4, 2014·4 cites·18 claims
- 1881US10359967B2Computer systemHITACHI LTD·Filed 2016·Granted Jul 23, 2019·3 cites·14 claims
- 1981US8707090B2Storage systemAKUTSU HIROAKI·Filed 2011·Granted Apr 22, 2014·6 cites·16 claims
- 2081US8281179B2Information system, data transfer method and data protection methodAKUTSU HIROAKI·Filed 2011·Granted Oct 2, 2012·5 cites·16 claims
- 2178US11886294B2Distributed storage systemHITACHI LTD·Filed 2022·Granted Jan 30, 2024·0 cites·10 claims
- 2278US10120601B2Storage system and data processing methodHITACHI LTD·Filed 2014·Granted Nov 6, 2018·5 cites·14 claims
- 2377US11698857B2Storage system for migrating data between tiersHITACHI LTD·Filed 2022·Granted Jul 11, 2023·0 cites·20 claims
- 2477US11256422B2Storage system and compressed sensor data recording method for sensors grouped based on parametersHITACHI LTD·Filed 2020·Granted Feb 22, 2022·1 cites·10 claims
- 2576US9830258B2Storage systemHITACHI LTD·Filed 2014·Granted Nov 28, 2017·2 cites·15 claims
- 2675US9329999B2Storage system improving read performance by controlling data cachingHITACHI LTD·Filed 2014·Granted May 3, 2016·3 cites·2 claims
- 2774US11150829B2Storage system and data control methodHITACHI LTD·Filed 2019·Granted Oct 19, 2021·1 cites·6 claims
- 2872US11487619B2Distributed storage systemHITACHI LTD·Filed 2021·Granted Nov 1, 2022·0 cites·12 claims
- 2972US8719524B2Storage system including flash drives for improving performance by controlling data cachingYOSHIHARA TOMOHIRO·Filed 2011·Granted May 6, 2014·3 cites·15 claims
- 3071US11941255B2Storage system and data management methodHITACHI LTD·Filed 2022·Granted Mar 26, 2024·0 cites·5 claims
- 3170US11372755B2Storage systemHITACHI LTD·Filed 2020·Granted Jun 28, 2022·0 cites·15 claims
- 3269US9026754B2Storage apparatus and data management methodMATSUSHITA TAKAKI·Filed 2012·Granted May 5, 2015·3 cites·12 claims
- 3368US12050797B2Storage system and storage cost optimization methodHITACHI LTD·Filed 2022·Granted Jul 30, 2024·0 cites·18 claims
- 3468US11829617B2Virtual storage systemHITACHI LTD·Filed 2021·Granted Nov 28, 2023·0 cites·9 claims
- 3567US11036585B2Distributed storage systemHITACHI LTD·Filed 2019·Granted Jun 15, 2021·0 cites·9 claims
- 3665US11327661B2Storage system and data management methodHITACHI LTD·Filed 2020·Granted May 10, 2022·0 cites·20 claims
- 3765US10459638B2Computer system that generates group information and redundant code based on user data and changes the group information and redundant code based on transmission data, control method for computer system, and recording mediumHITACHI LTD·Filed 2016·Granted Oct 29, 2019·1 cites·14 claims
- 3865US9003087B2Compound storage system and storage control methodHITACHI LTD·Filed 2013·Granted Apr 7, 2015·1 cites·15 claims
- 3964US11604584B2Storage systemHITACHI LTD·Filed 2020·Granted Mar 14, 2023·0 cites·26 claims
- 4063US10496479B2Distributed storage systemHITACHI LTD·Filed 2018·Granted Dec 3, 2019·0 cites·14 claims
- 4163US9256490B2Storage apparatus, storage system, and data management methodHITACHI LTD·Filed 2013·Granted Feb 9, 2016·1 cites·10 claims
- 4262US10733092B2Storage systemHITACHI LTD·Filed 2017·Granted Aug 4, 2020·0 cites·15 claims
- 4362US10528274B2Storage system and data management methodHITACHI LTD·Filed 2018·Granted Jan 7, 2020·0 cites·21 claims
- 4462US9122399B2Storage system and storage control methodHITACHI LTD·Filed 2013·Granted Sep 1, 2015·1 cites·8 claims
- 4562US8612683B2First storage control apparatus and first storage control apparatus control methodJIN AZUSA·Filed 2011·Granted Dec 17, 2013·2 cites·14 claims
- 4661US12354311B2Data compression and decompression system and method thereofHITACHI LTD·Filed 2022·Granted Jul 8, 2025·0 cites·15 claims
- 4761US10310758B2Storage system and storage control methodHITACHI LTD·Filed 2014·Granted Jun 4, 2019·1 cites·14 claims
- 4861US2025293705A1Data compression system, data compression method, and data compression programHITACHI LTD·Filed 2025·Application pending·0 cites
- 4960US10656836B2Storage systemHITACHI LTD·Filed 2018·Granted May 19, 2020·0 cites·15 claims
- 5058US2024331203A1Computer system and data compressing methodHITACHI LTD·Filed 2024·Application pending·0 cites
Showing the top 50 of 86 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →