P

Inventor

NAKAMURA KATSUNORI

JP67 patents
⚠️ This page may combine multiple inventors who share the name “NAKAMURA KATSUNORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

33 patents
US6681303B1Jan 20, 2004

Storage system

HITACHI LTD176 citations99
US6408370B2Jun 18, 2002

Storage system assuring data integrity and a synchronous remote data duplexing

HITACHI LTD150 citations99
US5978890ANov 2, 1999

External storage control device and data transfer method between external storage control devices

HITACHI LTD93 citations99
US6883073B2Apr 19, 2005

Virtualized volume snapshot formation method

HITACHI LTD76 citations98
US6240494B1May 29, 2001

Subsystem replacement method

HITACHI LTD132 citations98
US6230239B1May 8, 2001

Method of data migration

HITACHI LTD161 citations98
US4688221AAug 18, 1987

Error recovery method and apparatus

HITACHI LTD221 citations98
US6374327B2Apr 16, 2002

Method of data migration

HITACHI LTD80 citations97
US5253351AOct 12, 1993

Memory controller with a cache memory and control method of cache memory including steps of determining memory access threshold values

HITACHI LTD132 citations97
US7082506B2Jul 25, 2006

Remote copy control method, storage sub-system with the method, and large area data storage system using them

HITACHI LTD49 citations96
US6647476B2Nov 11, 2003

Subsystem replacement method

HITACHI LTD74 citations96
US5561825AOct 1, 1996

Storage system and method of remotely controlling the same

HITACHI LTD56 citations96
US6643750B2Nov 4, 2003

Storage apparatus system and method of data backup

HITACHI LTD53 citations93
US6950917B2Sep 27, 2005

Subsystem replacement method

HITACHI LTD21 citations92
US6665781B2Dec 16, 2003

Method and apparatus for data duplexing in storage unit system

HITACHI LTD23 citations92
US6615332B2Sep 2, 2003

Storage system assuring data integrity and asynchronous remote data duplexing

HITACHI LTD25 citations92
US6470432B2Oct 22, 2002

External storage control device and data transfer method between external storage control devices

HITACHI LTD17 citations92
US6321292B1Nov 20, 2001

External storage control device and data transfer method between external storage control devices

HITACHI LTD15 citations92
US5475859ADec 12, 1995

Disk cache unit having reduced waiting times for data transfer

HITACHI LTD29 citations92
US4807180AFeb 21, 1989

Multiple control system for disk storage and method for realizing same

HITACHI LTD43 citations92
US7194590B2Mar 20, 2007

Three data center adaptive remote copy

HITACHI LTD10 citations84
US5369751ANov 29, 1994

Disk cache control unit

HITACHI LTD19 citations82
US7246214B2Jul 17, 2007

Remote copy for a storage controller with reduced data size

HITACHI LTD8 citations74
US7191303B2Mar 13, 2007

Storage controller

HITACHI LTD5 citations74
US7162598B2Jan 9, 2007

Storage system

HITACHI LTD9 citations74
US7657707B2Feb 2, 2010

Storage controller

HITACHI LTD1 citations63
US7216208B2May 8, 2007

Storage controller

HITACHI LTD3 citations63
US7167962B2Jan 23, 2007

Remote copy for a storage controller with reduced data size

HITACHI LTD3 citations63
US7143252B2Nov 28, 2006

Storage apparatus system and method of data backup

HITACHI LTD3 citations63
US7114049B2Sep 26, 2006

Adaptive remote copy in a heterogeneous environment

HITACHI LTD3 citations63
US7213114B2May 1, 2007

Remote copy for a storage controller in a heterogeneous environment

HITACHI LTD3 citations62
US6988176B2Jan 17, 2006

Method and apparatus for data duplexing in storage unit system

HITACHI LTD3 citations62
US6810469B2Oct 26, 2004

Storage system and method for data transfer between storage systems

HITACHI LTD2 citations62

HONDA MOTOR CO LTD

10 patents

CANON KK

5 patents

NIPPON PMC KK

1 patent

NIPPON KAYAKU KK

1 patent

Showing the top 50 of 67 patents by PatentIndex Score.