Inventor · disambiguated record
Masafumi Nozawa
Also filed as: NOZAWA M · NOZAWA MASAFUMI
41 granted patents·2 pending applications·4,455 citations·filing 1976–2011
98Inventor score
Top patents by PatentIndex Score
43 records- 0199US5193154ABuffered peripheral system and method for backing up and retrieving data to and from backup memory deviceHITACHI LTD·Filed 1991·Granted Mar 9, 1993·1.5k cites·5 claims
- 0299US4525839AMethod of controlling storage deviceHITACHI LTD·Filed 1982·Granted Jun 25, 1985·189 cites·34 claims
- 0398US7356660B2Storage deviceHITACHI LTD·Filed 2005·Granted Apr 8, 2008·96 cites·9 claims
- 0498US5226157ABackup control method and system in data processing system using identifiers for controlling block data transferHITACHI LTD·Filed 1989·Granted Jul 6, 1993·1.5k cites·14 claims
- 0596US7395284B2storage systemHITACHI LTD·Filed 2005·Granted Jul 1, 2008·64 cites·16 claims
- 0695US7330950B2Storage deviceHITACHI LTD·Filed 2005·Granted Feb 12, 2008·31 cites·10 claims
- 0793US5235641AFile encryption method and file cryptographic systemHITACHI LTD·Filed 1991·Granted Aug 10, 1993·259 cites·15 claims
- 0892US5253351AMemory controller with a cache memory and control method of cache memory including steps of determining memory access threshold valuesHITACHI LTD·Filed 1989·Granted Oct 12, 1993·132 cites·31 claims
- 0992US4908793AStorage apparatus including a semiconductor memory and a disk driveHITACHI LTD·Filed 1987·Granted Mar 13, 1990·50 cites·3 claims
- 1089US7590664B2Storage system and storage system data migration methodHITACHI LTD·Filed 2005·Granted Sep 15, 2009·32 cites·1 claims
- 1188US5584008AExternal storage unit comprising active and inactive storage wherein data is stored in an active storage if in use and archived to an inactive storage when not accessed in predetermined time by the host processorHITACHI LTD·Filed 1992·Granted Dec 10, 1996·124 cites·22 claims
- 1287US7096336B2Information processing system and management deviceHITACHI LTD·Filed 2004·Granted Aug 22, 2006·35 cites·14 claims
- 1384US7849278B2Logical partition conversion for migration between storage unitsHITACHI LTD·Filed 2007·Granted Dec 7, 2010·9 cites·12 claims
- 1484US7730275B2Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over timeHITACHI LTD·Filed 2009·Granted Jun 1, 2010·9 cites·5 claims
- 1582US6966001B2Computing system and data decryption method and computer system with remote copy facilityHITACHI LTD·Filed 2001·Granted Nov 15, 2005·36 cites·15 claims
- 1681US7475131B2Network topology display method, management server, and computer program productHITACHI LTD·Filed 2005·Granted Jan 6, 2009·12 cites·12 claims
- 1780US7502904B2Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over timeHITACHI LTD·Filed 2005·Granted Mar 10, 2009·7 cites·41 claims
- 1880US7013372B2Method for controlling information processing system, information processing system and information processing programHITACHI LTD·Filed 2003·Granted Mar 14, 2006·31 cites·21 claims
- 1980US6813683B2Method and apparatus for copying data from a main site to a remote siteHITACHI LTD·Filed 2003·Granted Nov 2, 2004·24 cites·23 claims
- 2080US5243479AMounting structure for information recording and reproducing apparatusHITACHI LTD·Filed 1991·Granted Sep 7, 1993·33 cites·5 claims
- 2179US7426624B2Storage management computer program product and grouping method for storage groupsHITACHI LTD·Filed 2005·Granted Sep 16, 2008·11 cites·6 claims
- 2278US7305533B2Storage systemHITACHI LTD·Filed 2007·Granted Dec 4, 2007·6 cites·11 claims
- 2377US7716419B2Storage system and load balancing method thereofHITACHI LTD·Filed 2006·Granted May 11, 2010·8 cites·10 claims
- 2476US8230194B2Storage deviceMATSUNAMI NAOTO·Filed 2011·Granted Jul 24, 2012·3 cites·16 claims
- 2573US5613088ARaid system including first and second read/write heads for each disk driveHITACHI LTD·Filed 1994·Granted Mar 18, 1997·61 cites·33 claims
- 2673US5313617AMulti-disc optical data storage system for use with a host computer for emulating a magnetic disc deviceHITACHI LTD·Filed 1991·Granted May 17, 1994·61 cites·19 claims
- 2772US7213115B2Storage systemHITACHI LTD·Filed 2004·Granted May 1, 2007·13 cites·12 claims
- 2869US7925851B2Storage deviceHITACHI LTD·Filed 2008·Granted Apr 12, 2011·6 cites·15 claims
- 2968US8607010B2Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over timeFURUHASHI RYOJI·Filed 2011·Granted Dec 10, 2013·2 cites·4 claims
- 3066US4126887AMethod of controlling rotary memoryHITACHI LTD·Filed 1976·Granted Nov 21, 1978·11 cites·2 claims
- 3163US7930506B2Information processing system and management device for managing relocation of data based on a change in the characteristics of the data over timeHITACHI LTD·Filed 2010·Granted Apr 19, 2011·2 cites·2 claims
- 3261US7167902B1Disk subsystems and their integrated systemHITACHI LTD·Filed 2000·Granted Jan 23, 2007·7 cites·11 claims
- 3359US5497472ACache control method and apparatus for storing data in a cache memory and for indicating completion of a write request irrespective of whether a record to be accessed exists in an external storage unitHITACHI LTD·Filed 1995·Granted Mar 5, 1996·26 cites·20 claims
- 3455US5694576ACache control by adding record identification information to partial write requestHITACHI LTD·Filed 1995·Granted Dec 2, 1997·21 cites·28 claims
- 3554US7373390B2Disk subsystems and their integrated systemHITACHI LTD·Filed 2003·Granted May 13, 2008·3 cites·19 claims
- 3653US7130959B2Subsystems and an integrated system of these subsystemsHITACHI LTD·Filed 2004·Granted Oct 31, 2006·2 cites·21 claims
- 3751US5410666AOn-line dumping system and disk sub systemHITACHI LTD·Filed 1990·Granted Apr 25, 1995·20 cites·12 claims
- 3848US2004193760A1Storage deviceHITACHI LTD·Filed 2004·Application pending·0 cites
- 3947US7082496B2Cache control method and apparatusHITACHI LTD·Filed 2003·Granted Jul 25, 2006·0 cites·10 claims
- 4045US5606684AOn-line dumping system and disk sub-systemHITACHI LTD·Filed 1994·Granted Feb 25, 1997·14 cites·7 claims
- 4144US2006195667A1Remote copy for a storage controller with consistent write orderHITACHI LTD·Filed 2005·Application pending·0 cites
- 4237US6085286ACache control method and apparatusHITACHI LTD·Filed 1998·Granted Jul 4, 2000·6 cites·4 claims
- 4332US5187778ABuffered disk unit and method of transferring data thereinHITACHI LTD·Filed 1990·Granted Feb 16, 1993·5 cites·42 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →