Patents by Inventor Cynthia D. Millis

Cynthia D. Millis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Use of hydroxylated indoles as dye precursors
    Patent number: 4776857
    Abstract: The invention concerns a new system to dye hair and/or skin. The system comprises the use of a hydroxyindole dye precursor and sodium periodate. Advantageously, this dye system allows the dye to penetrate inside the hair fiber without coating the hair shaft and, thus, give a more pleasing and stable dye result.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: October 11, 1988
    Assignee: Repligen Corporation
    Inventors: James Carroll, Cynthia D. Millis, Walter C. Herlihy