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Image forming apparatus
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Patent number 9,052,621
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Issue date Jun 9, 2015
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Ricoh Company, Ltd.
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Teruki Kusahara
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Toner and image forming apparatus
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Patent number 8,795,938
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Issue date Aug 5, 2014
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Ricoh Company, Ltd.
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Osamu Uchinokura
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Toner and developer
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Patent number 8,431,304
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Issue date Apr 30, 2013
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Ricoh Company, Ltd.
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Tsuyoshi Sugimoto
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY