Inventor · disambiguated record
Ikuya Yagisawa
Also filed as: YAGISAWA IKUYA
88 granted patents·2 pending applications·1,801 citations·filing 1994–2013
99Inventor score
Top patents by PatentIndex Score
90 records- 0199US7085904B2Storage system and method for backupHITACHI LTD·Filed 2004·Granted Aug 1, 2006·495 cites·21 claims
- 0296US6694413B1Computer system and snapshot data management method thereofHITACHI LTD·Filed 2000·Granted Feb 17, 2004·180 cites·23 claims
- 0396US6425049B1Disk array system and method of changing the configuration of the disk array systemHITACHI LTD·Filed 2000·Granted Jul 23, 2002·140 cites·13 claims
- 0495US7057981B2Disk array system and method for controlling disk array systemHITACHI LTD·Filed 2004·Granted Jun 6, 2006·33 cites·14 claims
- 0592US7913037B2Computer system for controlling allocation of physical links and method thereofHITACHI LTD·Filed 2006·Granted Mar 22, 2011·25 cites·20 claims
- 0691US7200074B2Disk array system and method for controlling disk array systemHITACHI LTD·Filed 2004·Granted Apr 3, 2007·21 cites·48 claims
- 0791US7181571B2System and method for storage systemHITACHI LTD·Filed 2005·Granted Feb 20, 2007·46 cites·16 claims
- 0890US7249277B2Disk array including plural exchangeable magnetic disk unitHITACHI LTD·Filed 2004·Granted Jul 24, 2007·52 cites·9 claims
- 0989US7904651B2Storage device with disk power control based on logical storage areaHITACHI LTD·Filed 2008·Granted Mar 8, 2011·10 cites·4 claims
- 1089US5761402AArray type disk system updating redundant data asynchronously with data accessHITACHI LTD·Filed 1994·Granted Jun 2, 1998·120 cites·38 claims
- 1188US7565501B2Storage controller and data management methodHITACHI LTD·Filed 2006·Granted Jul 21, 2009·16 cites·16 claims
- 1287US7047354B2Storage systemHITACHI LTD·Filed 2003·Granted May 16, 2006·30 cites·13 claims
- 1385US7454583B2Storage controller and control method for dynamically accomodating increases and decreases in difference dataHITACHI LTD·Filed 2006·Granted Nov 18, 2008·15 cites·17 claims
- 1484US8468300B2Storage system having plural controllers and an expansion housing with drive unitsKANO AZUMA·Filed 2010·Granted Jun 18, 2013·5 cites·51 claims
- 1584US8266401B2Storage controller and data management methodNAGATA KOJI·Filed 2011·Granted Sep 11, 2012·6 cites·14 claims
- 1684US7941600B2Storage systemHITACHI LTD·Filed 2010·Granted May 10, 2011·5 cites·10 claims
- 1784US7216148B2Storage system having a plurality of controllersHITACHI LTD·Filed 2001·Granted May 8, 2007·34 cites·7 claims
- 1883US7346732B2Storage systemHITACHI LTD·Filed 2005·Granted Mar 18, 2008·8 cites·14 claims
- 1983US7203135B2Disk array system and method for controlling disk array systemHITACHI LTD·Filed 2004·Granted Apr 10, 2007·10 cites·23 claims
- 2083US7191287B2Storage system having a plurality of interfacesHITACHI LTD·Filed 2006·Granted Mar 13, 2007·8 cites·28 claims
- 2182US7552209B2Computer system managing an access to a storage systemHITACHI LTD·Filed 2008·Granted Jun 23, 2009·9 cites·6 claims
- 2282US7453774B2Disk array systemHITACHI LTD·Filed 2004·Granted Nov 18, 2008·9 cites·68 claims
- 2381US7925830B2Storage system for holding a remaining available lifetime of a logical storage regionHITACHI LTD·Filed 2008·Granted Apr 12, 2011·6 cites·6 claims
- 2481US7509467B2Storage controller and data management methodHITACHI LTD·Filed 2007·Granted Mar 24, 2009·11 cites·18 claims
- 2581US7206832B2Method and system of managing an access to a storage system in a computer systemHITACHI LTD·Filed 2004·Granted Apr 17, 2007·23 cites·18 claims
- 2679US8275938B2Computer system for controlling allocation of physical links and method thereofNAKAJIMA AKIO·Filed 2011·Granted Sep 25, 2012·4 cites·16 claims
- 2779US7366839B2Storage systemHITACHI LTD·Filed 2007·Granted Apr 29, 2008·5 cites·19 claims
- 2879US7062621B2Storage system and method for backupHITACHI LTD·Filed 2004·Granted Jun 13, 2006·23 cites·7 claims
- 2978US7765372B2Storage controller and data management methodHITACHI LTD·Filed 2008·Granted Jul 27, 2010·6 cites·18 claims
- 3077US8566541B2Storage system storing electronic modules applied to electronic objects common to several computers, and storage control method for the sameCHOI JIN·Filed 2010·Granted Oct 22, 2013·5 cites·11 claims
- 3177US8527981B2Storage device and method of instructing to update firmwareOIKAWA YOSHIHIRO·Filed 2008·Granted Sep 3, 2013·9 cites·12 claims
- 3277US8312312B2Data storage system using multiple communication protocolsOIKAWA YOSHIHIRO·Filed 2011·Granted Nov 13, 2012·5 cites·12 claims
- 3377US8131922B2Storage systemYAGISAWA IKUYA·Filed 2011·Granted Mar 6, 2012·3 cites·12 claims
- 3477US6981094B2Storage system having a plurality of interfacesHITACHI LTD·Filed 2004·Granted Dec 27, 2005·17 cites·12 claims
- 3576US7383380B2Array-type disk apparatus preventing lost data and providing improved failure toleranceHITACHI LTD·Filed 2004·Granted Jun 3, 2008·17 cites·22 claims
- 3676US7082462B1Method and system of managing an access to a private logical unit of a storage systemHITACHI LTD·Filed 2000·Granted Jul 25, 2006·23 cites·11 claims
- 3776US5802345AComputer system with a reduced number of command end interrupts from auxiliary memory unit and method of reducing the number of command end interruptsFiled 1995·Granted Sep 1, 1998·83 cites·51 claims
- 3875US7549084B2Storage control apparatus and failure recovery method for storage control apparatusHITACHI LTD·Filed 2006·Granted Jun 16, 2009·6 cites·10 claims
- 3975US7272686B2Storage systemHITACHI LTD·Filed 2004·Granted Sep 18, 2007·12 cites·25 claims
- 4074US8205048B2Storage device with enclosure power controlMURAMATSU KOTARO·Filed 2011·Granted Jun 19, 2012·3 cites·11 claims
- 4174US7757042B2Array-type disk apparatus preventing lost data and providing improved failure toleranceHITACHI LTD·Filed 2005·Granted Jul 13, 2010·5 cites·16 claims
- 4274US7447121B2Disk array systemHITACHI LTD·Filed 2007·Granted Nov 4, 2008·1 cites·26 claims
- 4373US8417886B2Storage systemYAGISAWA IKUYA·Filed 2012·Granted Apr 9, 2013·2 cites·13 claims
- 4472US8370590B2Storage controller and data management methodHITACHI LTD·Filed 2009·Granted Feb 5, 2013·4 cites·9 claims
- 4572US7913039B2Array-type disk apparatus preventing data lost and providing improved failure toleranceHITACHI LTD·Filed 2010·Granted Mar 22, 2011·2 cites·16 claims
- 4672US7472243B2Storage system and control method thereofHITACHI LTD·Filed 2006·Granted Dec 30, 2008·4 cites·18 claims
- 4772US7353406B2Disk array optimizing the drive operation timeHITACHI LTD·Filed 2004·Granted Apr 1, 2008·17 cites·12 claims
- 4872US7234023B2Disk array system and fault-tolerant control method for the sameHITACHI LTD·Filed 2004·Granted Jun 19, 2007·16 cites·15 claims
- 4971US7797486B2Storage systemHITACHI LTD·Filed 2008·Granted Sep 14, 2010·3 cites·8 claims
- 5071US5958067AArray type disk system updating redundant data asynchronously with data accessHITACHI LTD·Filed 1997·Granted Sep 28, 1999·49 cites·1 claims
Showing the top 50 of 90 patent records by PatentIndex Score.
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