Ryouichi Tazawa

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Multichannel array waveguide diffraction grating multiplexer/demult...
- Patent number 7,231,118
- Issue date Jun 12, 2007
- Omron Corporation
- Ryouichi Tazawa
- G02 - OPTICS
Information Patent Grant
Optical multi-demultiplexer
- Patent number 7,031,569
- Issue date Apr 18, 2006
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS
Information Patent Grant
Optical multi-demultiplexer
- Patent number 6,898,349
- Issue date May 24, 2005
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Multichannel array waveguide diffraction grating multiplexer/demult...
- Publication number 20060177180
- Publication date Aug 10, 2006
- NHK SPRING CO., LTD.
- Ryouichi Tazawa
- G02 - OPTICS
Information Patent Application
Optical multi-demultiplexer
- Publication number 20040170355
- Publication date Sep 2, 2004
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS
Information Patent Application
Optical multi-demultiplexer
- Publication number 20020159696
- Publication date Oct 31, 2002
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS