Patents by Inventor Alice A. Meyer

Alice A. Meyer 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).

  • Process for preparing dye compositions containing 5,6-dihydroxyindole
    Patent number: 5516916
    Abstract: A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under anaerobic condition and the products made by such process.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: May 14, 1996
    Assignee: Clairol Incorporated
    Inventors: Bryan P. Murphy, Keith C. Brown, Thomas M. Schultz, Alice A. Meyer
  • Dye compositions containing 5,6-dihydroxy indoles and a foam generator
    Patent number: 5492541
    Abstract: A process for preparing dye compositions which comprises hydrolyzing an O-protected 5,6-dihydroxyindole with an alkaline material under substantially anaerobic condition and the products made by such process.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: February 20, 1996
    Assignee: Clairol Incorporated
    Inventors: Bryan P. Murphy, Keith C. Brown, Thomas M. Schultz, Alice A. Meyer