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Azo lake pigment composition
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Patent number 6,402,828
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Issue date Jun 11, 2002
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Ciba Specialty Chemicals Corporation
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Greig Chisholm
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Production process
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Patent number 6,031,030
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Issue date Feb 29, 2000
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Ciba Speicialty Chemicals Corporation
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Robert Langley
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Pigment compositions
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Patent number 6,007,612
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Issue date Dec 28, 1999
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Ciba Specialty Chemicals Corporation
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Paul Kerwin
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Production of pigments
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Patent number 5,776,238
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Issue date Jul 7, 1998
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Ciba Specialty Chemicals Corporation
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Paul Kerwin
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...