Patents by Inventor Ryoichi Miyagaki

Ryoichi Miyagaki 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).

  • Polyisocyanate foam having isotropic cells and method and apparatus for preparing same
    Patent number: 4160074
    Abstract: A polyisocyanate foam having isotropic cells is manufactured by a foaming operation in an apparatus comprising a mold composed of side walls capable of extending and returning, or folding and unfolding, in directions perpendicular to the free rising direction. Mold extending means are provided to spread out the side walls of the mold perpendicular to the free rising direction. While the foamable composition is in a creamy state, it is allowed to rise freely in one direction (the free rising direction), while the side walls of the mold are in their folded condition, until a height detecting means is actuated.
    Type: Grant
    Filed: January 26, 1978
    Date of Patent: July 3, 1979
    Assignee: Nihon Soflan Chemical & Engineering Co., Ltd.
    Inventors: Hiroshi Komada, Kuniyasu Nakamura, Ryoichi Miyagaki