Patents by Inventor Mitsuhiko Sakamoto

Mitsuhiko Sakamoto 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).

  • Cosmetic applicator
    Patent number: 4776356
    Abstract: This invention concerns cosmetic applicators for low-viscosity liquid cosmetics. In particular, it relates to an applicator surface consisting of a latex foam having a combined structure including closed cells and open cells. The structure has a porosity for the open cell portion increasing from the area adjacent the closed cells toward the other side of the latex foam applicator. The latex foam can be natural or acrylonitrile-butadiene latex foam.
    Type: Grant
    Filed: December 23, 1986
    Date of Patent: October 11, 1988
    Assignee: Yukigaya kagaku Kogyo Kabushiki-kaisha
    Inventors: Matsayuki Jou, Mitsuhiko Sakamoto