Tatsuhiko Shitomi

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Analog optical transmission system
- Patent number 7,110,648
- Issue date Sep 19, 2006
- Sumitomo Electric Industries, Ltd.
- Toshiyuki Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical component, optical amplification module, and optical transm...
- Patent number 7,027,215
- Issue date Apr 11, 2006
- Sumitomo Electric Industries, Ltd.
- Hitoshi Hatayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Analog optical transmission system
- Publication number 20060045534
- Publication date Mar 2, 2006
- Toshiyuki Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical filter and optical amplifier using the same
- Publication number 20040120640
- Publication date Jun 24, 2004
- Hitoshi Hatayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical component, optical amplification module, and optical transm...
- Publication number 20040047022
- Publication date Mar 11, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Hitoshi Hatayama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE