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Plastic lens
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Patent number 5,496,641
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Issue date Mar 5, 1996
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Nippon Sheet Glass Co., Ltd.
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Shoji Mase
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G02 - OPTICS
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Process for producing light control plate
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Patent number 5,164,223
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Issue date Nov 17, 1992
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Nippon Sheet Glass Co., Ltd.
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Toshifumi Tsujino
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Laminated structure
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Patent number 4,956,227
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Issue date Sep 11, 1990
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Nippon Sheet Glass Co., Ltd.
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Naoto Hirayama
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B32 - LAYERED PRODUCTS
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Laminated structure
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Patent number 4,925,737
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Issue date May 15, 1990
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Nippon Sheet Glass Co., Ltd.
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Tsuyoshi Baba
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B32 - LAYERED PRODUCTS