Patents by Inventor Chikako Hirata

Chikako Hirata 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).

  • Gel-like emulsion and O/W emulsion obtained from the gel-like emulsion
    Patent number: 5362418
    Abstract: A gel-like emulsion is prepared by adding an oil to a surfactant continuous phase formed of a monoalkyl phosphate salt, polyhydric alcohol and water.The gel-like emulsion is scarcely dependent on temperature, and a fine and uniform O/W emulsion prepared from the gel-like emulsion reveals excellent stability at the time of production and at storage. The gel-like emulsion contains only a small amount of alkyl phosphate surface active agent of low irritativeness, so that it is usable for cosmetics, pharmaceuticals, industrial products and the like, which are required to have low irritation and high safety.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: November 8, 1994
    Assignee: Kao Corporation
    Inventors: Seiji Yamasaki, Toshiyuki Suzuki, Chikako Hirata