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Takaharu Tomita
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Kawasaki, JP
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last 30 patents
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Patent Grant
Optical demultiplexer circuit and demultiplexer device and optical...
Patent number
6,684,004
Issue date
Jan 27, 2004
Fujitsu Ltd.
Takaharu Tomita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical wavelength multiplexing system and terminal
Patent number
6,426,817
Issue date
Jul 30, 2002
Fujitsu Limited
Takaharu Tomita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Light amplifier device
Patent number
6,215,582
Issue date
Apr 10, 2001
Fujitsu Limited
Satoshi Sudo
G02 - OPTICS
Information
Patent Grant
Light signal transmission system and light signal transmission method
Patent number
6,212,311
Issue date
Apr 3, 2001
Fujitsu Limited
Takaharu Tomita
H04 - ELECTRIC COMMUNICATION TECHNIQUE