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Optical modulator
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Patent number 11,397,342
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Issue date Jul 26, 2022
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Sumitomo Osaka Cement Co., Ltd.
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Takatomo Itou
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G02 - OPTICS
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Optical waveguide device
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Patent number 11,378,828
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Issue date Jul 5, 2022
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Sumitomo Osaka Cement Co., Ltd.
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Shingo Takano
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G02 - OPTICS
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Optical device
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Patent number 10,088,698
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Issue date Oct 2, 2018
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Sumitomo Osaka Cement Co., Ltd.
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Yoshizumi Ishikawa
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G02 - OPTICS