Patents by Inventor Takahiro DOKI

Takahiro DOKI 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).

  • Publication number: 20170343486
    Abstract: Provided is a radiation phase-contrast imaging device capable of assuredly detecting a self-image and precisely imaging the internal structure of an object. According to the configuration of the present invention, the longitudinal direction of a detection surface of a flat panel detector is inclined with respect to the extending direction of an absorber in a phase grating. This causes variations in the position (phase) of a projected stripe pattern of a self-image at different positions on the detection surface. This is therefore expected to produce the same effects as those obtainable when a plurality of self-images are obtained by performing imaging a plurality of times in such a manner that the position of the projected self-images on the detection surface varies. This alone, however, results in a single self-image phase for a specific region of the object.
    Type: Application
    Filed: November 20, 2015
    Publication date: November 30, 2017
    Inventors: Koichi TANABE, Shingo FURUI, Hiroyuki KISHIHARA, Kenji KIMURA, Taro SHIRAI, Takahiro DOKI, Satoshi SANO, Akira HORIBA
  • Patent number: 9306108
    Abstract: In an X-ray strip detector, at least one joining semiconductor film are formed on surface of a sensitive semiconductor film, on the part of X-strips and Y-strips, that is sensitive to incident X-rays to generate electric charge, and on at least an entire sensitive region of a conversion film. The joining semiconductor film has higher resistance value than resistance value of the sensitive semiconductor film. Accordingly, when the electric charge generated in the sensitive semiconductor film are collected in the X-strips and the Y-strips, movement of the electric charge into other adjacent strip electrodes is avoidable. Consequently, crosstalk can be suppressed that the electric charge leak to the adjacent strip electrodes.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: April 5, 2016
    Assignee: SHIMADZU CORPORATION
    Inventors: Takahiro Doki, Koichi Tanabe, Toshinori Yoshimuta, Hiroyuki Kishihara, Satoshi Sano
  • Publication number: 20150265227
    Abstract: Disclosed is an X-ray apparatus with an X-ray tube controller. The X-ray tube controller controls an X-ray tube so as for X-rays emitted from the X-ray tube to have an energy width whose upper limit is more than the minimum K-shell absorption edge of K-shell absorption edges for elements forming a conversion film and is equal to or less than a preset value depending on a K-shell absorption edge corresponding to a characteristic X-ray whose energy influences the blur. Accordingly, the less number of ejected K-shell characteristic X-rays is obtainable than the case when the emitted X-rays have an energy width whose upper limit is more than a preset value depending on the K-shell absorption edge corresponding to the characteristic X-ray whose energy influences the blur. This allows a suppressed blurred image generated from ejected K-shell characteristic X-rays outside a pixel area where X-rays enter to introduce a photoelectric effect.
    Type: Application
    Filed: March 19, 2015
    Publication date: September 24, 2015
    Inventors: Satoshi SANO, Toshiyuki SATO, Koichi TANABE, Toshinori YOSHIMUTA, Hiroyuki KISHIHARA, Takahiro DOKI
  • Publication number: 20150200323
    Abstract: In an X-ray strip detector, at least one joining semiconductor film are formed on surface of a sensitive semiconductor film, on the part of X-strips and Y-strips, that is sensitive to incident X-rays to generate electric charge, and on at least an entire sensitive region of a conversion film. The joining semiconductor film has higher resistance value than resistance value of the sensitive semiconductor film. Accordingly, when the electric charge generated in the sensitive semiconductor film are collected in the X-strips and the Y-strips, movement of the electric charge into other adjacent strip electrodes is avoidable. Consequently, crosstalk can be suppressed that the electric charge leak to the adjacent strip electrodes.
    Type: Application
    Filed: January 12, 2015
    Publication date: July 16, 2015
    Inventors: Takahiro DOKI, Koichi TANABE, Toshinori YOSHIMUTA, Hiroyuki KISHIHARA, Satoshi SANO
  • Patent number: 8895341
    Abstract: A method of manufacturing a radiation detector, comprising: a charge blocking layer generating step of generating a charge blocking layer on a substrate; a CdTe-layer generating step of generating a CdTe layer so as to cover the charge blocking layer on the substrate, the CdTe layer undergoing heterojunction to the charge blocking layer and being composed of a chlorine-doped polycrystalline film; and a heat treatment step of performing a heat treatment on the substrate having the CdTe layer formed thereon.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: November 25, 2014
    Assignee: Shimadzu Corporation
    Inventors: Satoshi Tokuda, Toshinori Yoshimuta, Hiroyuki Kishihara, Masatomo Kaino, Akina Yoshimatsu, Takahiro Doki, Toshiyuki Sato
  • Publication number: 20140080243
    Abstract: A method of manufacturing a radiation detector, comprising: a charge blocking layer generating step of generating a charge blocking layer on a substrate; a CdTe-layer generating step of generating a CdTe layer so as to cover the charge blocking layer on the substrate, the CdTe layer undergoing heterojunction to the charge blocking layer and being composed of a chlorine-doped polycrystalline film; and a heat treatment step of performing a heat treatment on the substrate having the CdTe layer formed thereon.
    Type: Application
    Filed: March 4, 2013
    Publication date: March 20, 2014
    Applicant: SHIMADZU CORPORATION
    Inventors: Satoshi TOKUDA, Toshinori YOSHIMUTA, Hiroyuki KISHIHARA, Masatomo KAINO, Akina YOSHIMATSU, Takahiro DOKI, Toshiyuki SATO