Patents by Inventor Toshiaki Sekine

Toshiaki Sekine 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).

  • Xenon-133 radioactive stent for preventing restenosis of blood vessels and a process for producing the same
    Patent number: 6192095
    Abstract: Radioactive stents used in angioplasty on sclerotic coronary arteries without the risk of restenosis can be produced by ion injecting 133Xe into the surfaces of stents as a nuclide that has a shorter half-life and emits a smaller maximum energy of &bgr;-rays than 32p Uniform ion injection is accomplished using an apparatus capable of uniform irradiation of the stents with 133Xe ion beams. The source of 133Xe is a nuclear fission product generated from 235U in the fuel rods in nuclear reactor.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: February 20, 2001
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Toshiaki Sekine, Satoshi Watanabe, Akihiko Osa, Noriko Ishioka, Mitsuo Koizumi, Ryozo Nagai, Akira Hasegawa, Eiichi Okamoto, Akito Miyajima, Keiko Aoyagi, Yoichi Hoshino, Takahiro Yamagishi, Masahiko Kurabayashi