Patents by Inventor Kazuhiro Akagi

Kazuhiro Akagi 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).

  • Patent number: 7247373
    Abstract: A racquet string includes a core component whose principal component is a synthetic fiber, and a surface resin component, wherein fullerenes or by-product carbon particles derived from manufacture of fullerenes are blended into the surface resin component, and wherein the blended percentage content is in a range of at least 0.01 wt % and at most 5.0 wt % of the entire string. The surface resin component may be formed as a sheath component by coating or by composite spinning. It is preferable that the amount of fullerenes or by-product carbon particles derived from the manufacture of fullerenes that is included in the surface resin component is in a range of at least 0.1 wt % and at most 25 wt %. Thus, the durability of the racquet string is improved without substantially changing its physical properties.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: July 24, 2007
    Assignee: Gosen Co., Ltd.
    Inventors: Kazuhiro Akagi, Kenichi Umano, Yutaka Masuda
  • Publication number: 20050245333
    Abstract: A racquet string includes a core component whose principal component is a synthetic fiber, and a surface resin component, wherein fullerenes or by-product carbon particles derived from manufacture of fullerenes are blended into the surface resin component, and wherein the blended percentage content is in a range of at least 0.01 wt % and at most 5.0 wt % of the entire string. The surface resin component may be formed as a sheath component by coating or by composite spinning. It is preferable that the amount of fullerenes or by-product carbon particles derived from the manufacture of fullerenes that is included in the surface resin component is in a range of at least 0.1 wt % and at most 25 wt %. Thus, the durability of the racquet string is improved without substantially changing its physical properties.
    Type: Application
    Filed: February 10, 2005
    Publication date: November 3, 2005
    Applicant: Gosen Co., Ltd.
    Inventors: Kazuhiro Akagi, Kenichi Umano, Yutaka Masuda