Keisuke Otsuka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Map information system and map information processing method and pr...
- Patent number 7,617,047
- Issue date Nov 10, 2009
- Hitachi, Ltd.
- Hiroko Sakamoto
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Map information system and map information processing method and pr...
- Publication number 20070129887
- Publication date Jun 7, 2007
- Hiroko Sakamoto
- G06 - COMPUTING CALCULATING COUNTING