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Image formation method
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Patent number 7,152,968
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Issue date Dec 26, 2006
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Matsushita Electric Industrial Co., Ltd.
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Mamoru Soga
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Ink composition for inkjet recording
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Patent number 6,929,686
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Issue date Aug 16, 2005
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Matsushita Electric Industrial Co., Ltd.
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Mamoru Soga
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Organic secondary battery
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Patent number 5,089,359
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Issue date Feb 18, 1992
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Ricoh Company, Ltd.
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Toshiyuki Ohsawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Organic secondary battery
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Patent number 4,935,319
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Issue date Jun 19, 1990
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Ricoh Company, Ltd.
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Toshiyuki Ohsawa
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Diazo copying element
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Patent number 4,416,967
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Issue date Nov 22, 1983
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Ricoh Co., Ltd.
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Tsutomu Matsuda
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Diazo copying material
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Patent number 4,225,662
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Issue date Sep 30, 1980
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Ricoh Company, Ltd.
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Tsutomu Matsuda
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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