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Toner and developer
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Patent number 9,316,938
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Issue date Apr 19, 2016
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Ricoh Company, Ltd.
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Masaki Watanabe
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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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 development agent
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Patent number 8,367,292
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Issue date Feb 5, 2013
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Ricoh Company, Limited
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Teruki Kusahara
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY