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Shinji Tsuru
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Higashimurayama, JP
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last 30 patents
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Patent Grant
Optical devices with high polymer material and method of forming th...
Patent number
5,751,452
Issue date
May 12, 1998
Nippon Telegraph & Telephone Corporation
Keiji Tanaka
G02 - OPTICS
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Patent Grant
Method for making an optical device using a laser beam interference...
Patent number
5,748,272
Issue date
May 5, 1998
Nippon Telegraph & Telephone Corporation
Keiji Tanaka
G02 - OPTICS