Inventor
OBARA KIYOHIRO
JP29 patents
⚠️ This page may combine multiple inventors who share the name “OBARA KIYOHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
22 patentsUS6708232B2Mar 16, 2004
Data migration method, protocol converter and switching apparatus using it
HITACHI LTD197 citations99
US6378039B1Apr 23, 2002
Storage subsystem which balances loads across a plurality of disk controllers
HITACHI LTD98 citations99
US6820168B2Nov 16, 2004
Storage system and virtual private volume control method
HITACHI LTD74 citations98
US6748487B1Jun 8, 2004
Disk cache control method, disk array system, and storage system
HITACHI LTD72 citations98
US6115787ASep 5, 2000
Disc storage system having cache memory which stores compressed data
HITACHI LTD111 citations98
US6772365B1Aug 3, 2004
Data backup method of using storage area network
HITACHI LTD64 citations96
US6640281B2Oct 28, 2003
Storage subsystem with management site changing function
HITACHI LTD27 citations93
US6625691B2Sep 23, 2003
Storage subsystem with management site changing function
HITACHI LTD29 citations93
US6549920B1Apr 15, 2003
Data base duplication method of using remote copy and database duplication storage subsystem thereof
HITACHI LTD22 citations93
US6535954B2Mar 18, 2003
Storage subsystem with management site changing function
HITACHI LTD27 citations93
US7353240B1Apr 1, 2008
Method and storage system that enable sharing files among multiple servers
HITACHI LTD24 citations92
US6966001B2Nov 15, 2005
Computing system and data decryption method and computer system with remote copy facility
HITACHI LTD36 citations92
US5758053AMay 26, 1998
Fault handling and recovery for system having plural processors
HITACHI LTD25 citations92
US6895417B2May 17, 2005
Database duplication method of using remote copy and database duplication storage subsystem thereof
HITACHI LTD12 citations84
US7117228B2Oct 3, 2006
Method for transforming data formats between different database systems, an apparatus for executing the method and the program of the method
HITACHI LTD16 citations83
US7155492B2Dec 26, 2006
Method and system for caching network data
HITACHI LTD18 citations79
US7293147B2Nov 6, 2007
Storage system controlling exclusion/priority for I/O access
HITACHI LTD6 citations74
US7130954B2Oct 31, 2006
Data migration method, protocol converter and switching apparatus using it
HITACHI LTD10 citations74
US6910101B2Jun 21, 2005
Storage subsystem with management site changing function
HITACHI LTD7 citations74
US8046368B2Oct 25, 2011
Document retrieval system and document retrieval method
HITACHI LTD5 citations57
US9470533B2Oct 18, 2016
Map distribution server for automotive navigation systems, map data distribution system, and road difference data production method
HITACHI LTD1 citations52
US9098591B2Aug 4, 2015
Spatio-temporal data management system, spatio-temporal data management method, and machine-readable storage medium thereof
HITACHI LTD0 citations42