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Bis-azo compounds
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Patent number 4,327,020
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Issue date Apr 27, 1982
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Ricoh Company, Ltd.
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Masaomi Sasaki
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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3900459
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Patent number 3,900,459
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Issue date Aug 19, 1975
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3678028
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Patent number 3,678,028
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Issue date Jul 18, 1972
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3555005
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Patent number 3,555,005
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Issue date Jan 12, 1971
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3441556
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Patent number 3,441,556
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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3382228
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Patent number 3,382,228
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Patent number 1,785,769
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...