Patents by Inventor Hideaki Ohgaki

Hideaki Ohgaki 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).

  • Nondestructive inspection system using nuclear resonance fluorescence
    Patent number: 8804911
    Abstract: Isotope identification imaging of nuclear fuel material or explosives concealed in a drum or container in which nuclear reactor fuel or radioactive waste are sealed is realized while ensuring high precision, high reliability, and safety. A sample 31 is irradiated with laser Compton photon beams 21 and 22 generated by a collision between an electron beam 12 and polarized laser light 16 and 20. An isotope in the sample is identified using nuclear resonance fluorescence, and the spatial distribution thereof is imaged. In so doing, a nuclear level of an isotope whose emission direction of nuclear resonance fluorescence is dependent on the planes of polarization of the incident LCS photon beams is used.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 12, 2014
    Assignees: National Institute of Advanced Industrial Science and Technology, Japan Atomic Energy Agency, Kyoto University
    Inventors: Hiroyuki Toyokawa, Ryoichi Hajima, Takehito Hayakawa, Toshiyuki Shizuma, Nobuhiro Kikuzawa, Hideaki Ohgaki
  • NONDESTRUCTIVE INSPECTION SYSTEM USING NUCLEAR RESONANCE FLUORESCENCE
    Publication number: 20120002783
    Abstract: Isotope identification imaging of nuclear fuel material or explosives concealed in a drum or container in which nuclear reactor fuel or radioactive waste are sealed is realized while ensuring high precision, high reliability, and safety. A sample 31 is irradiated with laser Compton photon beams 21 and 22 generated by a collision between an electron beam 12 and polarized laser light 16 and 20. An isotope in the sample is identified using nuclear resonance fluorescence, and the spatial distribution thereof is imaged. In so doing, a nuclear level of an isotope whose emission direction of nuclear resonance fluorescence is dependent on the planes of polarization of the incident LCS photon beams is used.
    Type: Application
    Filed: March 4, 2010
    Publication date: January 5, 2012
    Applicants: National Institute of Advanced Industrial Science and Technology, Kyoto University, Japan Atomic Energy Agency
    Inventors: Hiroyuki Toyokawa, Ryoichi Hajima, Takehito Hayakawa, Toshiyuki Shizuma, Nobuhiro Kikuzawa, Hideaki Ohgaki