Yasuhiro Itou

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Kumagaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical switch and optical switch system
- Patent number 7,233,715
- Issue date Jun 19, 2007
- Hitachi, Ltd.
- Atsushi Kazama
- G02 - OPTICS
Information Patent Grant
Beam direction module and optical switch using the same
- Patent number 7,184,619
- Issue date Feb 27, 2007
- Hitachi, Ltd.
- Atsushi Kazama
- G02 - OPTICS
Information Patent Grant
Optical switch and beam direction module
- Patent number 7,006,721
- Issue date Feb 28, 2006
- Hitachi, Ltd.
- Atsushi Kazama
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Beam direction module and optical switch using the same
- Publication number 20050013534
- Publication date Jan 20, 2005
- Atsushi Kazama
- G02 - OPTICS
Information Patent Application
Optical switch and optical switch system
- Publication number 20040184718
- Publication date Sep 23, 2004
- Atsushi Kazama
- G02 - OPTICS
Information Patent Application
Optical switch and beam direction module
- Publication number 20040105616
- Publication date Jun 3, 2004
- Atsushi Kazama
- G02 - OPTICS