Patents by Inventor Masayoshi Sekiyama

Masayoshi Sekiyama 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).

  • Plastic compositions and plastic cards made thereof
    Patent number: 6150450
    Abstract: A plastic composition comprising an acrylonitrile component, a butadiene component and a styrene component, wherein the content of the butadiene component is from 5 to 15 mol %, the content of the acrylonitrile component is from 40 to 50 mol % and the content of the styrene component is from 40 to 50 mol %, said composition having a melt flow index of at least 5 g/10 min (as measured at 260.degree. C. with a force of 2.16 kg in accordance with JIS K7210).
    Type: Grant
    Filed: November 9, 1995
    Date of Patent: November 21, 2000
    Assignee: Mitsubishi Plastics, Inc.
    Inventors: Masayoshi Sekiyama, Tetsuya Yamaoka, Nobuyasu Suzuki