Inventor

TAKATORI HISASHI

JP2 patents

Patents

2 patents

US7047238B2May 16, 2006

Document retrieval method and document retrieval system

HITACHI SYSTEMS & SERVICES LTD29 citations88

US7010519B2Mar 7, 2006

Method and system for expanding document retrieval information

HITACHI SYSTEMS & SERVICES LTD16 citations76