Patents by Inventor Akio Kuzuhara

Akio Kuzuhara 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).

  • Pretreatment agents for acidic hair dyes
    Patent number: 7037347
    Abstract: Pretreatment agents for hair colorings with acid dye comprising at least one cationic polymer selected from the group consisting of polymers having amino groups and polymers having quaternary ammonium groups. The pretreatment agents for hair colorings with acid dye are used for improving coloring ability and color fastness of hair colorings with acid dye.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: May 2, 2006
    Assignee: Mandom Corporation
    Inventors: Akio Kuzuhara, Mitsuo Sano
  • Pretreatment agents for acidic hair dyes
    Publication number: 20040045099
    Abstract: Pretreatment agents for hair colorings with acid dye comprising at least one cationic polymer selected from the group consisting of polymers having amino groups and polymers having quaternary ammonium groups. The pretreatment agents for hair colorings with acid dye are used for improving coloring ability and color fastness of hair colorings with acid dye.
    Type: Application
    Filed: January 16, 2003
    Publication date: March 11, 2004
    Inventors: Akio Kuzuhara, Mitsuo Sano