Patents by Inventor Keisuke Masueda

Keisuke Masueda 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).

  • Apparatus for measuring density or the like of an object having a small transmission factor
    Patent number: 4949365
    Abstract: An apparatus for measuring the density or the like of an object from the level of transmission through the object of gamma rays having different energy levels which are transmitted at the object by a gamma source having a predetermined solid angle of transmission. A collimator collimates gamma transmitted through the object and a scintillator generates light corresponding to the output of the collimator. Plural photomultipliers generate position-dependent electrical signals corresponding to the light generated by an incident gamma ray photon to the scintillator. A calculating circuit generates a density spectrum for the object from the position-dependent electrical signals by integrating the position-dependent electrical signals corresponding to each of the incident gamma ray photons to the scintillator.
    Type: Grant
    Filed: February 16, 1989
    Date of Patent: August 14, 1990
    Assignee: Hamamatsu Photonics Kabushiki Kaisha
    Inventors: Kiyoshi Koike, Keisuke Masueda, Hiroshi Uchida, Tatsuro Hayashi, Rikushi Morita