Patents by Inventor by Richard Newman, executor

by Richard Newman, executor 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).

  • Oxidative hair dye compositions containing N-substituted o-phenylenediamines and method for their use
    Patent number: 3981677
    Abstract: Hair dyeing compositions are disclosed which contain an N-substituted o-phenylenediamine, the N-substituent being an alkyl, alkoxyalkyl, hydroxyalkyl, alkylaminoalkyl, dialkylaminoalkyl, phenyl or substituted phenyl. These give reddish shades by purely oxidative means, and the shades are fast to wet treatments and are long-wearing. Also disclosed are methods of dyeing hair with these compositions, as well as certain novel compounds suitable for the purpose, e.g., N-(alkoxyalkyl)-o-phenylenediamines.
    Type: Grant
    Filed: January 2, 1974
    Date of Patent: September 21, 1976
    Assignee: Clairol Incorporated
    Inventors: Alexander Halasz, Frederick Brody, deceased, by Richard Newman, executor