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Optical fiber
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Patent number 6,078,715
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Issue date Jun 20, 2000
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Sumitomo Electric Industries, Ltd.
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Takashi Fujii
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G02 - OPTICS
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Optical glass fiber
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Patent number 6,004,675
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Issue date Dec 21, 1999
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Sumitomo Electric Industries, Ltd.
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Nobuhiro Akasaka
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C03 - GLASS MINERAL OR SLAG WOOL
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Coated optical fiber
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Patent number 5,835,656
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Issue date Nov 10, 1998
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Sumitomo Electric Industries, Ltd.
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Kazumasa Oishi
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G02 - OPTICS
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Slitted winding wheel for optical fiber
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Patent number 5,441,215
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Issue date Aug 15, 1995
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Sumitomo Electric Industries, Ltd.
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Katsuya Nagayama
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Optical switch
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Patent number 5,432,873
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Issue date Jul 11, 1995
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Sumitomo Electric Industries, Ltd.
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Toshifumi Hosoya
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G02 - OPTICS
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Polymer clad optical fiber
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Patent number 5,052,779
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Issue date Oct 1, 1991
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Sumitomo Electric Industries, Ltd.
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Makoto Honjo
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C03 - GLASS MINERAL OR SLAG WOOL
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