Inventor · disambiguated record
Yasutomo Yamamoto
Also filed as: YAMAMOTO YASUTOMO
134 granted patents·10 pending applications·2,289 citations·filing 1995–2014
99Inventor score
Top patents by PatentIndex Score
144 records- 0199US7069383B2Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and displayHITACHI LTD·Filed 2005·Granted Jun 27, 2006·325 cites·8 claims
- 0298US8898383B2Apparatus for reallocating logical to physical disk devices using a storage controller and method of the sameYAMAMOTO YASUTOMO·Filed 2011·Granted Nov 25, 2014·321 cites·14 claims
- 0396US5956750AApparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and displayHITACHI LTD·Filed 1997·Granted Sep 21, 1999·184 cites·9 claims
- 0495US7739540B2Information system, data transfer method and data protection methodHITACHI LTD·Filed 2007·Granted Jun 15, 2010·40 cites·14 claims
- 0595US7461196B2Computer system having an expansion device for virtualizing a migration source logical unitHITACHI LTD·Filed 2006·Granted Dec 2, 2008·33 cites·20 claims
- 0694US7051121B2Method for controlling storage system, and storage control apparatusHITACHI LTD·Filed 2003·Granted May 23, 2006·75 cites·5 claims
- 0794US6895483B2Method and apparatus for data relocation between storage subsystemsHITACHI LTD·Filed 2002·Granted May 17, 2005·76 cites·17 claims
- 0893US8327110B2Storage system including a virtual volume, a plurality of disk drives and a plurality of flash memory devicesYAMAMOTO YASUTOMO·Filed 2011·Granted Dec 4, 2012·17 cites·15 claims
- 0993US6457153B2Storage device and storage subsystem for efficiently writing error correcting codeHITACHI LTD·Filed 2001·Granted Sep 24, 2002·34 cites·6 claims
- 1091US7624241B2Storage subsystem and performance tuning methodHITACHI LTD·Filed 2006·Granted Nov 24, 2009·17 cites·7 claims
- 1191US7185227B2Data restoring method and an apparatus using journal data and an identification informationHITACHI LTD·Filed 2003·Granted Feb 27, 2007·46 cites·28 claims
- 1291US7155587B2Storage subsystem and performance tuning methodHITACHI LTD·Filed 2005·Granted Dec 26, 2006·18 cites·24 claims
- 1390US8788786B2Storage system creating cache and logical volume areas in flash memoryHITACHI LTD·Filed 2012·Granted Jul 22, 2014·10 cites·28 claims
- 1490US7861052B2Computer system having an expansion device for virtualizing a migration source logical unitHITACHI LTD·Filed 2008·Granted Dec 28, 2010·16 cites·7 claims
- 1590US7802131B2Information system and data transfer methodHITACHI LTD·Filed 2007·Granted Sep 21, 2010·18 cites·12 claims
- 1690US7069385B2Cluster-type storage system and managing method of the cluster-type storage systemHITACHI LTD·Filed 2004·Granted Jun 27, 2006·57 cites·17 claims
- 1789US7702851B2Logical volume transfer method and storage network systemHITACHI LTD·Filed 2006·Granted Apr 20, 2010·15 cites·28 claims
- 1889US7305584B2Data restoring method and an apparatus using journal data and an identification informationHITACHI LTD·Filed 2006·Granted Dec 4, 2007·14 cites·41 claims
- 1989US7209986B2Method for controlling storage system, and storage control apparatusHITACHI LTD·Filed 2005·Granted Apr 24, 2007·15 cites·38 claims
- 2089US6446161B1Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and displayHITACHI LTD·Filed 1999·Granted Sep 3, 2002·91 cites·12 claims
- 2188US8386839B2Information system and data transfer methodHITACHI LTD·Filed 2011·Granted Feb 26, 2013·9 cites·11 claims
- 2288US7870093B2Storage subsystemHITACHI LTD·Filed 2008·Granted Jan 11, 2011·14 cites·10 claims
- 2388US7549083B2Data restoring method and an apparatus using journal data and an identification informationHITACHI LTD·Filed 2006·Granted Jun 16, 2009·13 cites·6 claims
- 2487US8090979B2Information system and data transfer methodWATANABE YASUO·Filed 2010·Granted Jan 3, 2012·10 cites·15 claims
- 2587US7337353B2Fault recovery method in a system having a plurality of storage systemsHITACHI LTD·Filed 2004·Granted Feb 26, 2008·43 cites·17 claims
- 2686US8151013B2Storage systemSERIZAWA KAZUYOSHI·Filed 2011·Granted Apr 3, 2012·8 cites·6 claims
- 2786US7925914B2Information system, data transfer method and data protection methodHITACHI LTD·Filed 2010·Granted Apr 12, 2011·7 cites·15 claims
- 2884US8028146B2Management of temporary and permanent areas in nonvolatile memories of a storage systemHITACHI LTD·Filed 2008·Granted Sep 27, 2011·9 cites·18 claims
- 2984US7711896B2Storage system that is connected to external storageHITACHI LTD·Filed 2007·Granted May 4, 2010·10 cites·11 claims
- 3084US7228380B2Storage system that is connected to external storageHITACHI LTD·Filed 2003·Granted Jun 5, 2007·29 cites·20 claims
- 3184US7219202B2Cluster storage system and replication creation method thereofHITACHI LTD·Filed 2004·Granted May 15, 2007·31 cites·22 claims
- 3284US6708252B2Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and displayHITACHI LTD·Filed 2002·Granted Mar 16, 2004·23 cites·5 claims
- 3383US7673110B2Control method of device in storage system for virtualizationHITACHI LTD·Filed 2005·Granted Mar 2, 2010·10 cites·12 claims
- 3483US7412543B2Method for controlling storage system, and storage control apparatusHITACHI LTD·Filed 2006·Granted Aug 12, 2008·8 cites·21 claims
- 3582US9329795B2Logical volume transfer method and storage network systemHITACHI LTD·Filed 2014·Granted May 3, 2016·4 cites·10 claims
- 3682US8041914B2Storage system comprising function for reducing power consumptionHITACHI LTD·Filed 2008·Granted Oct 18, 2011·9 cites·22 claims
- 3782US7886109B2Storage system coupled to management server and a monitoring method of a stopped device executed by the storage systemHITACHI LTD·Filed 2009·Granted Feb 8, 2011·9 cites·12 claims
- 3882US7603583B2Fault recovery method in a system having a plurality of storage systemHITACHI LTD·Filed 2008·Granted Oct 13, 2009·10 cites·5 claims
- 3982US7457899B2Method for controlling storage system, and storage control apparatusHITACHI LTD·Filed 2006·Granted Nov 25, 2008·8 cites·20 claims
- 4082US7392336B2Connecting device of storage device and computer system including the same connecting deviceHITACHI LTD·Filed 2005·Granted Jun 24, 2008·9 cites·1 claims
- 4181US8281179B2Information system, data transfer method and data protection methodAKUTSU HIROAKI·Filed 2011·Granted Oct 2, 2012·5 cites·16 claims
- 4281US7464223B2Storage system including storage adapters, a monitoring computer and external storageHITACHI LTD·Filed 2007·Granted Dec 9, 2008·9 cites·10 claims
- 4381US7386755B2Backup copying and restoration processing in a storage subsystemHITACHI LTD·Filed 2004·Granted Jun 10, 2008·24 cites·20 claims
- 4481US7171522B2Storage system including storage adaptors having cache memories and grasping usage situation of each cache memory and equalizing usage of cache memoriesHITACHI LTD·Filed 2004·Granted Jan 30, 2007·26 cites·10 claims
- 4581US7152146B2Control of multiple groups of network-connected storage devicesHITACHI LTD·Filed 2003·Granted Dec 19, 2006·26 cites·8 claims
- 4681US7100074B2Storage system, and control method, job scheduling processing method, and failure handling method therefor, and program for each methodHITACHI LTD·Filed 2004·Granted Aug 29, 2006·31 cites·11 claims
- 4780US7124267B2Remote copy systemHITACHI LTD·Filed 2004·Granted Oct 17, 2006·26 cites·18 claims
- 4879US7908433B2Virtual volume control method involving device stopHITACHI LTD·Filed 2010·Granted Mar 15, 2011·4 cites·5 claims
- 4979US7269646B2Method for coupling storage devices of cluster storageHITACHI LTD·Filed 2004·Granted Sep 11, 2007·28 cites·9 claims
- 5078US8281098B2Storage subsystem and performance tuning methodEGUCHI YOSHIAKI·Filed 2011·Granted Oct 2, 2012·3 cites·10 claims
Showing the top 50 of 144 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Yasutomo Yamamoto files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →