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Masaki Kohtoku
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Kanagawa-ken, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor optical modulation element
Patent number
10,254,624
Issue date
Apr 9, 2019
Nippon Telegraph and Telephone Corporation
Yoshihiro Ogiso
G02 - OPTICS
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Patent Grant
Optical wavelength multiplexing/ de-multiplexing circuit
Patent number
8,369,666
Issue date
Feb 5, 2013
Nippon Telegraph and Telephone Corporation
Shin Kamei
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
SEMICONDUCTOR OPTICAL MODULATION ELEMENT
Publication number
20180164654
Publication date
Jun 14, 2018
Nippon Telegraph and Telephone Corporation
Yoshihiro Ogiso
G02 - OPTICS
Information
Patent Application
Optical Wavelength Multiplexing/ De-multiplexing Circuit
Publication number
20110116802
Publication date
May 19, 2011
Nippon Telegraph and Telephone Corporation
Shin Kamei
G02 - OPTICS