Patents by Inventor Machiko Yokozeki

Machiko Yokozeki 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).

  • Resin composition, molded article therefrom, and utilization thereof
    Patent number: 6506828
    Abstract: A resin composition which comprises 100 parts by weight of a synthetic resin and 50 to 1,500 parts by weight of magnesium oxide particles, wherein the magnesium oxide particles satisfy the following requirements (i) to (v): (i) an average secondary particle diameter of 0.1 to 130 &mgr;m, (ii) a BET method specific surface area of 0.1 to 5 m2/g, (iii) a total content of an Fe compound and an Mn compound of 0.01 wt % or less in terms of metals, (iv) an Na content of 0.001 wt % or less, and (v) a Cl content of 0.005 wt % or less, and a molded product formed therefrom. Since the resin composition of the present invention has excellent flame retardancy, heat conductivity and water resistance, it is advantageously used as a material for sealing a heat generating electronic member such as a semiconductor.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: January 14, 2003
    Assignee: Kyowa Chemical Industry Co., Ltd.
    Inventors: Hitoshi Anabuki, Machiko Yokozeki