Patents Represented by Attorney D. F. Shulman

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  • Sulfur containing quaternary ammonium salts as hair conditioning agents
    Patent number: 5206013
    Abstract: Processes for conditioning human hair by treatment with selected sulfur containing quaternary ammonium compounds, compositions useful for such processes and novel quaternary compounds useful in the processes.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: April 27, 1993
    Assignee: Clairol, Inc.
    Inventors: Thomas M. Deppert, Janusz Z. Jachowicz, Bryan P. Murphy