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Signal transmission device
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Patent number 8,014,638
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Issue date Sep 6, 2011
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The University of Tokyo
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Yoshiaki Nakano
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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All-optical flip-flop
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Patent number 7,292,746
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Issue date Nov 6, 2007
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Japan Science and Technology Agency
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Yoshiaki Nakano
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G02 - OPTICS
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Optical device
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Patent number 6,374,029
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Issue date Apr 16, 2002
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The University of Tokyo
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Yoshiaki Nakano
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G02 - OPTICS
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Optical waveguide isolator
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Patent number 6,208,795
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Issue date Mar 27, 2001
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Sugimura International Patent & Trademark Agency Bureau
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Yoshiaki Nakano
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G02 - OPTICS
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Frequency multiplier
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Patent number 5,392,014
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Issue date Feb 21, 1995
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Fujitsu Limited
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Haruki Nishida
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H03 - BASIC ELECTRONIC CIRCUITRY
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Semiconductor laser
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Patent number 5,077,752
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Issue date Dec 31, 1991
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Optical Measurement Technology Development Co., Ltd.
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Kunio Tada
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B82 - NANO-TECHNOLOGY