Patents by Inventor Taketoshi Kajihara

Taketoshi Kajihara 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).

  • Expandable rubber-modified styrene resin compositions
    Patent number: 6232358
    Abstract: To provide an expandable rubber-modified styrene resin composition that is enabled to obtain a molded foam having a high expansion ratio, an excellent impact resistance and pliability and satisfactory appearance. The expandable rubber-modified styrene resin composition comprises 85 to 99% by weight of a rubber-modified styrene resin containing a rubber particle of a diene polymer dispersed in a continuous phase of a styrene resin and 1 to 15% by weight of a volatile blowing agent whose boiling point is 80° C. or lower, wherein: the weight-average molecular weight of said continuous phase of styrene resin is 150,000 to 300,000; the graft ratio of the styrene resin to the diene polymer is 70 to 135%; and, the swelling index of the gel fraction of said diene polymer in toluene at 25° C. is 12 to 25.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: May 15, 2001
    Assignees: Mitsubishi Chemical Foam Plastic Corporation, Mitsubishi Chemical Corporation
    Inventors: Kenji Haraguchi, Taketoshi Kajihara