Patents by Inventor Kazuhiro Takezaki

Kazuhiro Takezaki 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).

  • Amorphous nano-scale carbon tube and production method therefor
    Patent number: 6960334
    Abstract: Straight, nano-scale-order amorphous carbon tubes having a long-term stable ability for storing various kinds of gases and being stable in shape, and a novel process for producing said carbon tubes with high purity, high yield and high mass-productivity are provided. The amorphous nano-scale carbon tubes are prepared by subjecting a heat-decomposable resin having a decomposition temperature of 200 to 900° C. to an excitation treatment in the presence of a metal powder and/or a metal salt, or by subjecting a carbon material containing —C?C— and/or ?C? to a heat-treatment at 3000° C. or lower.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: November 1, 2005
    Assignee: Osaka Gas Company Limited
    Inventors: Hisaji Matsui, Ryoichi Nishida, Hitoshi Nishino, Chiharu Yamaguchi, Haruyuki Nakaoka, Kazuhiro Takezaki, Katsuhiro Sasaki