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Koji Akimoto
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Kanagawa, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical modulation apparatus
Patent number
7,474,460
Issue date
Jan 6, 2009
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical modulating device
Patent number
7,336,414
Issue date
Feb 26, 2008
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Ring network using multi-wavelength generator
Patent number
7,206,510
Issue date
Apr 17, 2007
Nippon Telegraph and Telephone Corporation
Hiroo Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical communication system, optical communication unit, and optic...
Patent number
7,155,127
Issue date
Dec 26, 2006
Nippon Telegraph and Telephone Corporation
Koji Akimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Multi-wavelength optical modulation circuit and wavelength-division...
Patent number
7,127,168
Issue date
Oct 24, 2006
Nippon Telegraph and Telephone Corporation
Jun-ichi Kani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Optical modulation apparatus
Publication number
20070127113
Publication date
Jun 7, 2007
Nippon Telegraph and Telephone Corporation
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical modulating device
Publication number
20060024066
Publication date
Feb 2, 2006
Masamichi Fujiwara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Ring network using multi-wavelength generator
Publication number
20030067649
Publication date
Apr 10, 2003
Nippon Telegraph and Telephone Corporation
Hiroo Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical communication system, optical communication unit, and optic...
Publication number
20030039010
Publication date
Feb 27, 2003
Nippon Telegraph and Telephone Corporation
Koji Akimoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multi-wavelength optical modulation circuit and wavelength-division...
Publication number
20020191904
Publication date
Dec 19, 2002
Nippon Telegraph and Telephone Corporation
Jun-Ichi Kani
H04 - ELECTRIC COMMUNICATION TECHNIQUE