Shigeru Kawaguchi

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical multi-demultiplexer
- Patent number 6,898,349
- Issue date May 24, 2005
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS
Information Patent Grant
Method for fabricating planar optical waveguide devices
- Patent number 6,605,228
- Issue date Aug 12, 2003
- NHK Spring Co., Ltd.
- Shigeru Kawaguchi
- G02 - OPTICS
Information Patent Grant
Optical device and optical module provided with optical device
- Patent number 6,361,222
- Issue date Mar 26, 2002
- NHK Spring Co., Ltd.
- Shigeru Kawaguchi
- G02 - OPTICS
Information Patent Grant
Hot Isostatic pressing of a planar optical waveguide
- Patent number 6,122,934
- Issue date Sep 26, 2000
- NHK Spring Co., Ltd.
- Takeshi Narita
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical multi-demultiplexer
- Publication number 20020159696
- Publication date Oct 31, 2002
- NHK Spring Co., Ltd.
- Junji Yamauchi
- G02 - OPTICS