Patents by Inventor Takenori Mizuno

Takenori Mizuno 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).

  • X-ray computed tomography apparatus
    Patent number: 11089667
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a high voltage power supply, and focus size control circuitry. The X-ray tube includes a cathode, an anode, and a deflector configured to deflect the electrons from the cathode. The high voltage power supply generates a tube voltage to be applied between the cathode and the anode. The focus size control circuitry controls a focus size formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during the period where the tube voltage is applied by the high voltage power supply.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: August 10, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroshi Hirayama, Sanae Harada, Takenori Mizuno, Masahiro Karahashi
  • X-RAY COMPUTED TOMOGRAPHY APPARATUS
    Publication number: 20200245442
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a high voltage power supply, and focus size control circuitry. The X-ray tube includes a cathode, an anode, and a deflector configured to deflect the electrons from the cathode. The high voltage power supply generates a tube voltage to be applied between the cathode and the anode. The focus size control circuitry controls a focus size formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during the period where the tube voltage is applied by the high voltage power supply.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 30, 2020
    Applicant: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: Hiroshi Hirayama, Sanae Harada, Takenori Mizuno, Masahiro Karahashi
  • X-ray computed tomography apparatus
    Patent number: 10660190
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a high voltage power supply, and focus size control circuitry. The X-ray tube includes a cathode, an anode, and a deflector configured to deflect the electrons from the cathode. The high voltage power supply generates a tube voltage to be applied between the cathode and the anode. The focus size control circuitry controls a focus size formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during the period where the tube voltage is applied by the high voltage power supply.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: May 19, 2020
    Assignee: Canon Medical Systems Corporation
    Inventors: Hiroshi Hirayama, Sanae Harada, Takenori Mizuno, Masahiro Karahashi
  • X-RAY COMPUTED TOMOGRAPHY APPARATUS
    Publication number: 20180228011
    Abstract: According to one embodiment, an X-ray computed tomography apparatus includes an X-ray tube, a high voltage power supply, and focus size control circuitry. The X-ray tube includes a cathode, an anode, and a deflector configured to deflect the electrons from the cathode. The high voltage power supply generates a tube voltage to be applied between the cathode and the anode. The focus size control circuitry controls a focus size formed in the anode by applying to the deflector a deflecting voltage of a deflecting voltage value based on a tube voltage value of the tube voltage and a predetermined size, in order to form a focus of the predetermined size in the anode during the period where the tube voltage is applied by the high voltage power supply.
    Type: Application
    Filed: February 5, 2018
    Publication date: August 9, 2018
    Applicant: Canon Medical Systems Corporation
    Inventors: Hiroshi Hirayama, Sanae Harada, Takenori Mizuno, Masahiro Karahashi