Hidetaka Onishi

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical wavelength division multiplexing access system
- Patent number 7,555,215
- Issue date Jun 30, 2009
- Nippon Telegraph and Telephone Corporation
- Hirotaka Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Optical wavelength multiplex access system
- Publication number 20060062576
- Publication date Mar 23, 2006
- Hirotaka Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE