Patents by Inventor Guiru (NMN) ZHANG

Guiru (NMN) ZHANG 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).

  • Novel hair coloring compositions for use in oxidative hair dyeing
    Publication number: 20050188480
    Abstract: Hair dyeing compositions are provided which comprise at least one coupler selected from N-aryl-m-phenylenediamine derivatives, 2-substituted N-aryl-m-phenylenediamine derivatives, and N-aryl-m-diaminopyridine derivatives, in combination with and at least one diaminopyrazole primary intermediate.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 1, 2005
    Inventors: Mu'lll Lim, Guiru Zhang, Bryan Murphy