Patents by Inventor Tetsuo Sawada

Tetsuo Sawada 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).

  • Radioactivity measuring apparatus using optical fiber
    Patent number: 7141795
    Abstract: An elongated, thinner apparatus is provided so as to measure surface contamination in narrow places and piping. An elongated plate-shaped radioactivity detection section (10) provided with a scintillator and a radioactivity measuring section (12) provided with a photomultiplier are provided as independent components and are connected together using a wavelength conversion optical fiber cable (14). A measurement signal (optical signal) of ?-rays detected by the radioactivity detection section is transmitted to the radioactivity measuring section via the optical fiber cable.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: November 28, 2006
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Yasuhisa Ito, Hisashi Ishikawa, Toshio Miyake, Tetsuo Sawada
  • Radioactivity measuring apparatus using optical fiber
    Publication number: 20050189495
    Abstract: An elongated, thinner apparatus is provided so as to measure surface contamination in narrow places and piping. An elongated plate-shaped radioactivity detection section 10 provided with a scintillator and a radioactivity measuring section 12 provided with a photomultiplier are provided as independent components and connected together using a wavelength conversion optical fiber cable 14. A measurement signal (optical signal) of ?-rays detected by the radioactivity detection section is transmitted to the radioactivity measuring section via the optical fiber cable.
    Type: Application
    Filed: February 16, 2005
    Publication date: September 1, 2005
    Inventors: Yasuhisa Ito, Hisashi Ishikawa, Toshio Miyake, Tetsuo Sawada