Patents by Inventor Yoko Nagasawa

Yoko Nagasawa 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).

  • Hydrophilic polymer-silicate mineral complex material and use thereof
    Patent number: 5538728
    Abstract: A complex material of a hydrophilic polymer-silicate mineral comprising a carboxyl group containing hydrophilic polymer and a water swellable silicate mineral, and having a new absorption spectrum not existing in both starting materials in the IR-ray absorption spectrum within the range of 1000 to 1300 cm.sup.-1, and pharmaceutical and cosmetic compositions comprising same.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: July 23, 1996
    Assignee: Shiseido Company, Ltd.
    Inventors: Toshio Yanaki, Tadahito Takahashi, Yoko Nagasawa, Michihiro Yamaguchi