Tatsuhiko Tanaka

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical signal processor and optical signal processing method for p...
- Patent number 7,521,660
- Issue date Apr 21, 2009
- Sumitomo Electric Industries, Ltd.
- Michiko Takushima
- G02 - OPTICS
Information Patent Grant
Method of fabricating optical signal processor
- Patent number 6,983,089
- Issue date Jan 3, 2006
- Sumitomo Electric Industries, Ltd.
- Michiko Takushima
- G02 - OPTICS
Information Patent Grant
Optical signal processing apparatus
- Patent number 6,927,913
- Issue date Aug 9, 2005
- Sumitomo Electric Industries, Ltd.
- Michiko Takushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device and fixing member used in the device
- Patent number 6,903,884
- Issue date Jun 7, 2005
- Sumitomo Electric Industries, Ltd.
- Tomomi Sano
- G02 - OPTICS
Information Patent Grant
Optical signal processing apparatus
- Patent number 6,823,114
- Issue date Nov 23, 2004
- Sumitomo Electric Industries, Ltd.
- Michiko Takushima
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Optical signal processor and optical signal processing method
- Publication number 20050238285
- Publication date Oct 27, 2005
- Michiko Takushima
- G02 - OPTICS
Information Patent Application
Method of fabricating optical signal processor
- Publication number 20050141807
- Publication date Jun 30, 2005
- Michiko Takushima
- G02 - OPTICS
Information Patent Application
Optical device and fixing member used in the device
- Publication number 20040120054
- Publication date Jun 24, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tomomi Sano
- G02 - OPTICS
Information Patent Application
Optical signal processing apparatus
- Publication number 20030197935
- Publication date Oct 23, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Michiko Takushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal processing apparatus
- Publication number 20030189765
- Publication date Oct 9, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Michiko Takushima
- G02 - OPTICS