Inventor · disambiguated record
Kenji Yamagami
Also filed as: YAMAGAMI KENJI
76 granted patents·8 pending applications·2,341 citations·filing 1993–2013
99Inventor score
Top patents by PatentIndex Score
84 records- 0198US7606940B2Remote copy systemHITACHI LTD·Filed 2006·Granted Oct 20, 2009·81 cites·14 claims
- 0298US7111136B2Method and apparatus for backup and recovery system using storage based journalingHITACHI LTD·Filed 2003·Granted Sep 19, 2006·155 cites·12 claims
- 0397US6775230B1Apparatus and method for transmitting frames via a switch in a storage area networkHITACHI LTD·Filed 2000·Granted Aug 10, 2004·222 cites·11 claims
- 0495US7243197B2Method and apparatus for backup and recovery using storage based journalingHITACHI LTD·Filed 2006·Granted Jul 10, 2007·29 cites·20 claims
- 0595US7162601B2Method and apparatus for backup and recovery system using storage based journalingHITACHI LTD·Filed 2006·Granted Jan 9, 2007·34 cites·20 claims
- 0695US7096269B2Path selection methods for storage based remote copyHITACHI LTD·Filed 2001·Granted Aug 22, 2006·120 cites·20 claims
- 0795US7076620B2Data processing system including storage systemsHITACHI LTD·Filed 2003·Granted Jul 11, 2006·120 cites·16 claims
- 0894US7139826B2Initial copy for remote copyHITACHI LTD·Filed 2001·Granted Nov 21, 2006·103 cites·18 claims
- 0994US6658434B1Method of and a system for recovering data in an information processing systemHITACHI LTD·Filed 2000·Granted Dec 2, 2003·92 cites·12 claims
- 1093US8296265B2Method and apparatus for synchronizing applications for data recovery using storage based journalingYAMAGAMI KENJI·Filed 2011·Granted Oct 23, 2012·15 cites·16 claims
- 1193US7152120B2Remote copy systemHITACHI LTD·Filed 2006·Granted Dec 19, 2006·23 cites·10 claims
- 1293US6854034B1Computer system and a method of assigning a storage device to a computerHITACHI LTD·Filed 2000·Granted Feb 8, 2005·66 cites·18 claims
- 1393US6681303B1Storage systemHITACHI LTD·Filed 1999·Granted Jan 20, 2004·176 cites·33 claims
- 1492US7523148B2Storage systemHITACHI LTD·Filed 2005·Granted Apr 21, 2009·24 cites·23 claims
- 1591US7555601B2Storage control system including virtualization and control method for sameHITACHI LTD·Filed 2007·Granted Jun 30, 2009·16 cites·41 claims
- 1690US7152078B2Systems, methods and computer program products for backup and restoring storage volumes in a storage area networkHITACHI LTD·Filed 2001·Granted Dec 19, 2006·67 cites·8 claims
- 1790US7065589B2Three data center remote copy system with journalingHITACHI LTD·Filed 2003·Granted Jun 20, 2006·49 cites·8 claims
- 1890US6836830B1Method of data backup in a computer system and a storage system thereforHITACHI LTD·Filed 2000·Granted Dec 28, 2004·78 cites·3 claims
- 1988US8131956B2Virtual storage system and method for allocating storage areas and releasing storage areas from allocation based on certain commandsYAMAGAMI KENJI·Filed 2011·Granted Mar 6, 2012·7 cites·28 claims
- 2088US7167880B2Method and apparatus for avoiding journal overflow on backup and recovery system using storage based journalingHITACHI LTD·Filed 2004·Granted Jan 23, 2007·44 cites·15 claims
- 2187US8145603B2Method and apparatus for data recovery using storage based journalingYAMAGAMI KENJI·Filed 2006·Granted Mar 27, 2012·15 cites·19 claims
- 2287US7418565B2Remote e copy system and a remote copy method utilizing multiple virtualization apparatusesHITACHI LTD·Filed 2006·Granted Aug 26, 2008·16 cites·36 claims
- 2387US6701455B1Remote copy system with data integrityHITACHI LTD·Filed 2000·Granted Mar 2, 2004·48 cites·12 claims
- 2486US7240197B1Method and apparatus for encryption and decryption in remote data storage systemsHITACHI LTD·Filed 2000·Granted Jul 3, 2007·51 cites·26 claims
- 2586US7191251B2Storage control sub-system comprising virtual storage unitsHITACHI LTD·Filed 2004·Granted Mar 13, 2007·38 cites·9 claims
- 2685US7243116B2Storage systemHITACHI LTD·Filed 2004·Granted Jul 10, 2007·34 cites·43 claims
- 2785US6859824B1Storage system connected to a data network with data integrityHITACHI LTD·Filed 2000·Granted Feb 22, 2005·47 cites·20 claims
- 2883US7275100B2Failure notification method and system using remote mirroring for clustering systemsHITACHI LTD·Filed 2001·Granted Sep 25, 2007·39 cites·16 claims
- 2982US7783848B2Method and apparatus for backup and recovery using storage based journalingHITACHI LTD·Filed 2007·Granted Aug 24, 2010·7 cites·16 claims
- 3082US7398422B2Method and apparatus for data recovery system using storage based journalingHITACHI LTD·Filed 2004·Granted Jul 8, 2008·26 cites·16 claims
- 3182US7093068B2Storage control system and method that reduces consumption of logical device storage capacityHITACHI LTD·Filed 2004·Granted Aug 15, 2006·21 cites·20 claims
- 3282US7039777B2Method and apparatus for managing replication volumesHITACHI LTD·Filed 2002·Granted May 2, 2006·27 cites·13 claims
- 3381US7937448B2Remote copy with path selection and prioritizationHITACHI LTD·Filed 2008·Granted May 3, 2011·7 cites·17 claims
- 3481US7139885B2Method and apparatus for managing storage based replicationHITACHI LTD·Filed 2001·Granted Nov 21, 2006·31 cites·19 claims
- 3581US7076687B2System and method for bi-directional failure detection of a site in a clustering systemHITACHI LTD·Filed 2002·Granted Jul 11, 2006·31 cites·32 claims
- 3681US6810491B1Method and apparatus for the takeover of primary volume in multiple volume mirroringHITACHI LTD·Filed 2000·Granted Oct 26, 2004·28 cites·17 claims
- 3780US6925541B2Method and apparatus for managing replication volumesHITACHI LTD·Filed 2002·Granted Aug 2, 2005·25 cites·53 claims
- 3879US7979741B2Method and apparatus for data recovery system using storage based journalingHITACHI LTD·Filed 2010·Granted Jul 12, 2011·4 cites·12 claims
- 3979US6907498B2Computer system and a method of assigning a storage device to a computerHITACHI LTD·Filed 2002·Granted Jun 14, 2005·28 cites·18 claims
- 4078US7664926B2Storage apparatus and storage area allocation methodHITACHI LTD·Filed 2009·Granted Feb 16, 2010·5 cites·8 claims
- 4178US7660946B2Storage control system and storage control methodHITACHI LTD·Filed 2005·Granted Feb 9, 2010·9 cites·13 claims
- 4278US7310702B2Storage control system and control method for the sameHITACHI LTD·Filed 2006·Granted Dec 18, 2007·5 cites·21 claims
- 4376US7574462B2Method and apparatus for avoiding journal overflow on backup and recovery system using storage based journalingHITACHI LTD·Filed 2006·Granted Aug 11, 2009·6 cites·17 claims
- 4476US7555505B2Method and apparatus for synchronizing applications for data recovery using storage based journalingHITACHI LTD·Filed 2006·Granted Jun 30, 2009·5 cites·16 claims
- 4574US8234473B2Method and apparatus for backup and recovery using storage based journalingYAMAGAMI KENJI·Filed 2010·Granted Jul 31, 2012·2 cites·11 claims
- 4673US7617227B2Storage control sub-system comprising virtual storage unitsHITACHI LTD·Filed 2007·Granted Nov 10, 2009·5 cites·10 claims
- 4773US7167949B2Multi-processor type storage control apparatus for performing access control through selectorHITACHI LTD·Filed 2005·Granted Jan 23, 2007·4 cites·8 claims
- 4872US8595431B2Storage control system including virtualization and control method for sameYAMAGAMI KENJI·Filed 2009·Granted Nov 26, 2013·3 cites·21 claims
- 4972US7581007B2Method, apparatus and services for leasing volumesHITACHI LTD·Filed 2003·Granted Aug 25, 2009·16 cites·16 claims
- 5072US6697866B1Access control method for data stored in fixed-block length format in computer configurations utilizing variable length data format interfacesHITACHI LTD·Filed 2000·Granted Feb 24, 2004·18 cites·20 claims
Showing the top 50 of 84 patent records by PatentIndex Score.
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