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Polycyclic compounds
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Patent number 5,968,252
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Issue date Oct 19, 1999
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Ciba Specialty Chemicals Corporation
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Robert Moretti
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C07 - ORGANIC CHEMISTRY
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Pigment compositions of diketopyrrolopyrroles
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Patent number 5,738,719
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Issue date Apr 14, 1998
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Ciba Specialty Chemicals Corporation
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Olof Wallquist
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Diketopyrrolopyrroles
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Patent number 5,342,955
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Issue date Aug 30, 1994
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Ciba-Geigy Corporation
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Gary Wooden
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C07 - ORGANIC CHEMISTRY
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Pigment compositions
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Patent number 5,271,759
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Issue date Dec 21, 1993
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Ciba-Geigy Corporation
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Gary Wooden
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Dianthraquinonyl compounds
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Patent number 5,238,984
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Issue date Aug 24, 1993
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Ciba-Geigy Corporation
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Olof Wallquist
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C07 - ORGANIC CHEMISTRY
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Diketopyrrolopyrroles
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Patent number 5,200,528
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Issue date Apr 6, 1993
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Ciba-Geigy Corporation
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Gary Wooden
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C07 - ORGANIC CHEMISTRY