Patents by Inventor Sou KITAZAWA

Sou KITAZAWA 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: 20200209195
    Abstract: An ultrasonic flaw detection method and device identifies echoes appearing in flaw detection images. By selecting and controlling combinations of transmitting elements and receiving elements, plural waveform signals c are recorded. For each position in an inspection object, intensities of plural waveform signals are extracted based on the propagation time of ultrasonic waves and are totalized. A flaw detection image showing distribution of totalized intensities is generated. By selectively using at least three sound velocities for calculating propagation time of ultrasonic waves, at least three flaw detection images are generated. The areas of at least three echoes respectively appearing in the flaw detection images are calculated and the echo area which is the smallest is identified according to whether or not the flaw detection image showing the echo is one generated using one of a longitudinal sound velocity, a transverse sound velocity and a medium sound velocity.
    Type: Application
    Filed: December 5, 2019
    Publication date: July 2, 2020
    Inventors: Sou KITAZAWA, Hidetaka KOMURO, Junichiro NAGANUMA, Kazuya EHARA
  • Patent number: 10309772
    Abstract: Chirp waves generated in a transmitting/receiving unit is supplied to ultrasonic sensors. Signals output from the ultrasonic sensors are supplied to the transmitting/receiving unit and summed in a signal processing/recording unit. The signal processing/recording unit performs mutual correlation processing between the summed signals and the chirp waves and calculates a peak generation time difference. Necessity of exchanging a pipe is determined by calculating and recording the thickness of a pipe from the calculated time difference and calculating a difference between thicknesses measured in the past and the present.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: June 4, 2019
    Assignee: Hitachi-GE Nuclear Energy, Ltd.
    Inventors: Sou Kitazawa, Naoyuki Kono, Shinobu Okido
  • Publication number: 20190072526
    Abstract: There is provided, for example, an ultrasonic probe capable of improving the accuracy of testing of a curved-surface structure. An array sensor (ultrasonic array sensor) includes multiple elements (oscillators) to generate an ultrasonic wave. Water (propagation member) is disposed between the array sensor and steel (test target) to propagate the ultrasonic wave. At least one reflection section reflects the ultrasonic wave reflected and returned from the surface of or the inside of the steel, and causes the ultrasonic wave to fall on any of the elements.
    Type: Application
    Filed: August 30, 2018
    Publication date: March 7, 2019
    Inventors: Sou KITAZAWA, Hidetaka KOMURO, Junichiro NAGANUMA
  • Publication number: 20170153108
    Abstract: Chirp waves generated in a transmitting/receiving unit is supplied to ultrasonic sensors. Signals output from the ultrasonic sensors are supplied to the transmitting/receiving unit and summed in a signal processing/recording unit. The signal processing/recording unit performs mutual correlation processing between the summed signals and the chirp waves and calculates a peak generation time difference. Necessity of exchanging a pipe is determined by calculating and recording the thickness of a pipe from the calculated time difference and calculating a difference between thicknesses measured in the past and the present.
    Type: Application
    Filed: November 23, 2016
    Publication date: June 1, 2017
    Inventors: Sou KITAZAWA, Naoyuki KONO, Shinobu OKIDO