Takafumi Kashima

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Sakura-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gain tilt free optical fiber amplifier in a wide dynamic gain range
- Patent number 6,563,628
- Issue date May 13, 2003
- Fujikura Ltd.
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier utilizing rare earth element-doped optical fibers...
- Patent number 6,542,288
- Issue date Apr 1, 2003
- Fujikura Ltd.
- Takeshi Segi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Optical fiber amplifier
- Publication number 20010017728
- Publication date Aug 30, 2001
- Tomoharu Kitabayashi
- H01 - BASIC ELECTRIC ELEMENTS