Naohiro Koizumi

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for expanding document retrieval information
- Patent number 7,010,519
- Issue date Mar 7, 2006
- Hitachi, Ltd.
- Katsumi Tada
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Method and system for expanding document retrieval information
- Publication number 20020169763
- Publication date Nov 14, 2002
- Katsumi Tada
- G06 - COMPUTING CALCULATING COUNTING