Patents by Inventor Mai NAGATOSHI

Mai NAGATOSHI 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 composition
    Patent number: 10052268
    Abstract: An oxidative hair dye composition contains a first agent that includes an alkaline agent and is a cream formulation and a second agent that includes an oxidant and is liquid. The oxidative hair dye composition at the time of use has a viscosity at 25° C. of 3,000 to 10,000 mPa·s. The oxidative hair dye composition further includes (A) a salt of an oxidative dye, (B) a cationic surfactant in a content of 0.15% by mass or more, (C) a nonionic surfactant having an HLB value of 17 to 20, and (D) a nonionic surfactant having an HLB value of 11 or less.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: August 21, 2018
    Assignee: HOYU CO., LTD.
    Inventors: Nana Morishita, Hiroki Takahashi, Mai Nagatoshi
  • OXIDATIVE HAIR DYE COMPOSITION
    Publication number: 20170340524
    Abstract: An oxidative hair dye composition contains a first agent that includes an alkaline agent and is a cream formulation and a second agent that includes an oxidant and is liquid. The oxidative hair dye composition at the time of use has a viscosity at 25° C. of 3,000 to 10,000 mPa·s. The oxidative hair dye composition further includes (A) a salt of an oxidative dye, (B) a cationic surfactant in a content of 0.15% by mass or more, (C) a nonionic surfactant having an HLB value of 17 to 20, and (D) a nonionic surfactant having an HLB value of 11 or less.
    Type: Application
    Filed: May 23, 2017
    Publication date: November 30, 2017
    Inventors: Nana MORISHITA, Hiroki TAKAHASHI, Mai NAGATOSHI