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Oligomer azo colorants
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Patent number 6,153,734
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Issue date Nov 28, 2000
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BASF Aktiengesellschaft
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Gunter-Rudolf Schroder
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Oligomeric azo dyes
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Patent number 6,114,512
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Issue date Sep 5, 2000
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BASF Aktiengesellschaft
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Gunter-Rudolf Schroder
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Cationic sulfonic acid dyes
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Patent number 6,048,969
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Issue date Apr 11, 2000
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BASF Aktiengesellschaft
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Gunter-Rudolf Schroder
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Oligomeric triarylmethane dyes
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Patent number 5,750,742
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Issue date May 12, 1998
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BASF Aktiengesellschaft
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Gunter-Rudolf Schroder
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...