Patents by Inventor Shizunobu Fukushima

Shizunobu Fukushima 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).

  • Reinforced foamed resin structural material and process for manufacturing the same
    Patent number: 4330494
    Abstract: A structural material formed of a fiber and honeycomb reinforced foamed resin is disclosed, which is constructed by arranging a honeycomb material, the voids of which contain a foamable thermosetting resinous liquid, between two fibrous layers and heating the assembly to foam the resinous liquid and simultaneously cover and impregnate the fibrous layers whereby the fibrous layers and the honeycomb material are completely impregnated with and encased in the foamed resin.
    Type: Grant
    Filed: September 11, 1979
    Date of Patent: May 18, 1982
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Akira Iwata, Shizunobu Fukushima