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Hideo Kuwahara
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Kawasaki, JP
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last 30 patents
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Patent Grant
Direct modulation phase shift keying (DM-PSK) transmission system
Patent number
5,228,043
Issue date
Jul 13, 1993
Fujitsu Limited
Takao Naito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Receiver for coherent optical communication
Patent number
5,115,332
Issue date
May 19, 1992
Fujitsu Limited
Takao Naito
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dual balanced optical signal receiver
Patent number
5,003,626
Issue date
Mar 26, 1991
Fujitsu Limited
Hideo Kuwahara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization diversity optical receiver for coherent optical commun...
Patent number
4,965,858
Issue date
Oct 23, 1990
Fujitsu Limited
Takao Naito
H04 - ELECTRIC COMMUNICATION TECHNIQUE