Patents by Inventor Yukihiro Sibuya

Yukihiro Sibuya 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).

  • Composite carbonaceous heat insulator
    Patent number: 6686048
    Abstract: A composite carbonaceous heat insulator which comprises a carbonaceous heat-insulating member having a bulk density of 0.1 to 0.4 g/cm3, a carbonaceous protecting layer having a bulk density of 0.3 to 2.0 g/cm3 and comprising a carbon fiber structure and a thermally decomposed carbon penetrated into the structure, and a thermally decomposed carbon coating layer having a bulk density higher than that of the carbonaceous protecting layer, wherein the above carbonaceous protecting layer is jointed to at least a part of the carbonaceous heat-insulating member to form a jointed body, and the thermally decomposed carbon coating layer is formed at least on the face of carbonaceous heat-insulating member in the surface of the jointed body; and a method for manufacturing the insulator. The heat insulator is reduced with respect to the depletion, deterioration and pulverization during the use thereof, while maintaining excellent insulating characteristics.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: February 3, 2004
    Assignee: Kureha Kagaku Kogyo K. K.
    Inventors: Yoshihiro Arimoto, Yukihiro Sibuya, Masanori Kobayashi, Shigeki Iwamoto