Patents Represented by Attorney Richard H. Howrey & Simon Kjeldgaard

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  • Non-mutagenic dye
    Patent number: 5676708
    Abstract: A dye composition that presents lower mutagenic characteristics useful in coloring petroleum products comprising a substantial amount of the dye of the formula ##STR1##
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: October 14, 1997
    Assignee: United Color, Inc.
    Inventor: Michael J. Smith