Hirofumi Otsuka

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Shinagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Map data update method and map data update system
- Patent number 8,239,355
- Issue date Aug 7, 2012
- Alpine Electronics, Inc.
- Minoru Sekine
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Map data update method and map data update system
- Publication number 20070143014
- Publication date Jun 21, 2007
- Minoru Sekine
- G01 - MEASURING TESTING