Inventor
YAMAGUCHI AKIHIKO
JP18 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGUCHI AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6665668B1Dec 16, 2003
Document retrieval method and system and computer readable storage medium
HITACHI LTD144 citations97
US7908314B2Mar 15, 2011
Method for controlling a management computer
HITACHI LTD54 citations94
US7054860B2May 30, 2006
Method and system for retrieving a document and computer readable storage medium
HITACHI LTD42 citations92
US6865571B2Mar 8, 2005
Document retrieval method and system and computer readable storage medium
HITACHI LTD33 citations92
US6757676B1Jun 29, 2004
Text mining method and apparatus allowing a user to analyze contents of a document set from plural analysis axes
HITACHI LTD23 citations92
US7136923B2Nov 14, 2006
Method of managing a storage area network
HITACHI LTD13 citations84
US6965976B2Nov 15, 2005
Backup method on a hierarchical backup system
HITACHI LTD12 citations84
US9021480B2Apr 28, 2015
Security management device and method
HITACHI LTD1 citations52
YAMAGUCHI AKIHIKO
3 patentsUS8321863B2Nov 27, 2012
Security management device and method
YAMAGUCHI AKIHIKO16 citations91
US9304000B2Apr 5, 2016
Cooperation system, navigation system, in-vehicle apparatus and portable terminal
YAMAGUCHI AKIHIKO9 citations82
US7660435B2Feb 9, 2010
Damage analysis-supporting system
YAMAGUCHI AKIHIKO5 citations61