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Yoshihito Kasai
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Polarizing function element, optical isolator, laser diode module a...
Patent number
7,002,742
Issue date
Feb 21, 2006
Namiki Seimitsu Houseki Kabushiki Kaisha
Nobuo Imaizumi
G02 - OPTICS
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last 30 patents
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Patent Application
Polarizing function element, optical isolator, laser diode module a...
Publication number
20030007251
Publication date
Jan 9, 2003
Nobuo Imaizumi
G02 - OPTICS