Patents by Inventor Hedeki Kuwabara

Hedeki Kuwabara 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).

  • Method of production of expansion-molded article, from foamable thermoplastic resin particles and apparatus therefor
    Patent number: 4822542
    Abstract: This invention relates to a method and apparatus for improving not only the quality of the production of molded foamable thermoplastic resin particles converted into fusion-bonded materials but also the output by protecting the resin from atmospheric pressure by pressurizing the particles and heating the particles to soften the same.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: April 18, 1989
    Assignee: Japan Styrene Paper Corporation
    Inventors: Hedeki Kuwabara, Atusi Kitagawa, Masato Kanbe