Patents by Inventor Kenji Yasuda

Kenji Yasuda 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: 20210270650
    Abstract: An ultrasonic flowmeter includes measurement flow path and a pair of ultrasonic sensors arranged upstream and downstream on a first surface of measurement flow path. In addition, the ultrasonic flowmeter includes a flow rate calculator that detects a flow rate of a fluid to be measured based on a propagation time until ultrasonic signals transmitted from one of the pair of ultrasonic sensors propagate with one or more reflections on a second surface of measurement flow path facing the first surface, and are received by another one of the pair of ultrasonic sensors. Furthermore, measurement flow path has an inner wall surface provided with a draft of a mold for integral molding, and the pair of ultrasonic sensors are fixed to measurement flow path, incident angles of ultrasonic signals transmitted from the pair of the ultrasonic sensors on reflection surface of the second surface where the ultrasonic signals are reflected being equal.
    Type: Application
    Filed: July 25, 2019
    Publication date: September 2, 2021
    Inventors: YUKIHIDE TAKAHASHI, HIROSHI NAKAI, KENJI YASUDA, TAKASHI KAYABA, YUKI ANAN
  • Publication number: 20210270649
    Abstract: An ultrasonic flow meter includes measurement flow path where a cross section of a flow path through which a fluid to be measured flows is rectangular, one or more partition plates that divide measurement flow path into a plurality of layered flow paths, and a pair of ultrasonic sensors that are disposed upstream and downstream on the layered flow paths and are capable of transmitting and receiving an ultrasonic signal. In addition, the ultrasonic flow meter includes a flow rate measuring unit that detects a flow rate of the fluid to be measured based on a propagation time, the propagation time being a time period from when one of the ultrasonic sensors transmits the ultrasonic signal to cause the ultrasonic signal to propagate through the fluid to be measured until when an other one of the ultrasonic sensors receives the ultrasonic signal.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 2, 2021
    Inventors: YUKIHIDE TAKAHASHI, HIROSHI NAKAI, KENJI YASUDA, TAKASHI KAYABA, YUKI ANAN
  • Patent number: 11099191
    Abstract: The purpose of the present invention is to provide: a method for predicting the prognosis for kidney disease for a subject on the basis of the amount of D- and L-amino acids, from a blood sample; and an analysis system that determines prognosis predictions. This purpose is achieved by using at least one amino acid to predict the prognosis for kidney disease, said amino acid being selected from the group consisting of D-serine, D-asparagine, D-proline, D-alanine, D-leucine, D-lysine, D-allo-isoleucine, L-glutamic acid, L-alanine, L-tryptophan, and L-asparagine.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: August 24, 2021
    Assignees: Osaka University, Kagami Inc.
    Inventors: Yoshitaka Isaka, Tomonori Kimura, Keiko Yasuda, Kenji Hamase, Masashi Mita
  • Publication number: 20210116945
    Abstract: Provided is a gas safety device including: flow path for flowing gas; flow rate measurement unit for measuring a flow rate of the gas flowing through flow path; absolute pressure sensor disposed inside flow path to measure an absolute pressure of the gas; absolute pressure sensor disposed outside flow path to measure an absolute pressure of atmospheric pressure; and gas pressure determination unit that measures a change in gas supply pressure from the absolute pressure of the gas and the absolute pressure of the atmospheric pressure measured by absolute pressure sensor and absolute pressure sensor, respectively. The gas safety device further includes shutoff valve that shuts off flow path, and control circuit that controls flow rate measurement unit and that causes shutoff valve to shut off flow path when determining abnormality from the flow rate of the gas measured by flow rate measurement unit or the change in gas supply pressure measured by gas pressure determination unit.
    Type: Application
    Filed: May 28, 2019
    Publication date: April 22, 2021
    Inventors: TAKASHI KAYABA, YUJI FUJII, KENJI YASUDA, MASANORI NAKAMURA, YUKI ANAN
  • Publication number: 20210010894
    Abstract: A gas safety device includes: flow path through which a gas flows; ultrasonic sensor for measuring a flow rate of the gas flowing through flow path; flow rate calculator that calculates a flow rate measurement data pieces from a measurement value of the flow rate measured by ultrasonic sensor; and leakage detector that detects a minor leakage of the gas. The gas safety device further includes: pulsation recognizer that recognizes that pulsation is occurring when a fluctuation in the flow rate measuring data pieces calculated by flow rate calculator is greater than or equal to a predetermined value; and pulsating flow rate corrector that corrects, when pulsation recognizer determines that the pulsation is occurring, the flow rate measurement data piece by a predetermined value. Furthermore, when pulsation recognizer determines that the pulsation is occurring, leakage detector determines whether a leakage is present using the flow rate measurement data piece corrected by pulsating flow rate corrector.
    Type: Application
    Filed: March 14, 2019
    Publication date: January 14, 2021
    Inventors: YUJI FUJII, TAKASHI KAYABA, YOSHIHIRO UEDA, KENJI YASUDA, TAITI GYOUTOKU, HIDEKI KINOSHITA
  • Patent number: 10591330
    Abstract: Flow rate measurement is performed with a propagation time by using a pair of ultrasonic wave oscillators which is provided in flow path through which a fluid to be measured flows, and is disposed so as to transmit and receive an ultrasonic wave signal by causing the ultrasonic wave signal to be reflected on an inner wall of flow path at least once. In addition, adjustment of an amplification rate is periodically performed by amplifier, which amplifies the ultrasonic wave signal received by each of the ultrasonic wave oscillators to a predetermined amplitude, and a difference between a previous amplification rate and a current amplification rate is a predetermined value or more, and the instantaneous flow rate calculated by flow rate calculation unit is a predetermined flow rate or less, the reference voltage is adjusted by reference voltage setting unit. With the configuration, the propagation time can be stably measured and deterioration of the maximum amplitude is prevented.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: March 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuki Shiota, Kenji Yasuda, Ryuji Iwamoto, Yuji Fujii, Yasuo Koba
  • Publication number: 20190078918
    Abstract: Flow rate measurement is performed with a propagation time by using a pair of ultrasonic wave oscillators which is provided in flow path through which a fluid to be measured flows, and is disposed so as to transmit and receive an ultrasonic wave signal by causing the ultrasonic wave signal to be reflected on an inner wall of flow path at least once. In addition, adjustment of an amplification rate is periodically performed by amplifier, which amplifies the ultrasonic wave signal received by each of the ultrasonic wave oscillators to a predetermined amplitude, and a difference between a previous amplification rate and a current amplification rate is a predetermined value or more, and the instantaneous flow rate calculated by flow rate calculation unit is a predetermined flow rate or less, the reference voltage is adjusted by reference voltage setting unit. With the configuration, the propagation time can be stably measured and deterioration of the maximum amplitude is prevented.
    Type: Application
    Filed: December 15, 2016
    Publication date: March 14, 2019
    Inventors: KAZUKI SHIOTA, KENJI YASUDA, RYUJI IWAMOTO, YUJI FUJII, YASUO KOBA
  • Patent number: 10113891
    Abstract: A flow rate measurement device includes a turbulence reduction component having opening portions and disposed between a measurement channel and a pair of hole portions across which a pair of ultrasonic transceivers are disposed from the measurement channel. The pair of opening portions of the turbulence reduction component each have frame pieces which are substantially identical in width. This makes it possible to reduce, with small attenuation of ultrasound, the occurrence of turbulence that is attributable to entrained flows in the pair of hole portions and is a cause of measurement error, thereby ensuring measurement accuracy.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 30, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Nakai, Kenji Yasuda, Masato Satou, Hideaki Morihana, Yuji Fujii
  • Publication number: 20170343398
    Abstract: A flow rate measurement device includes a turbulence reduction component having opening portions and disposed between a measurement channel and a pair of hole portions across which a pair of ultrasonic transceivers are disposed from the measurement channel. The pair of opening portions of the turbulence reduction component each have frame pieces which are substantially identical in width. This makes it possible to reduce, with small attenuation of ultrasound, the occurrence of turbulence that is attributable to entrained flows in the pair of hole portions and is a cause of measurement error, thereby ensuring measurement accuracy.
    Type: Application
    Filed: March 11, 2016
    Publication date: November 30, 2017
    Inventors: Hiroshi NAKAI, Kenji YASUDA, Masato SATOU, Hideaki MORIHANA, Yuji FUJII
  • Patent number: 9494565
    Abstract: A hatching egg inspection apparatus includes: a plurality of light emitter, the light emitter being disposed two dimensionally at prescribed positions; light receiver, which are provided in a one-to-one relationship with the light emitter and each of which receives light from the corresponding light emitter; and an egg container, which is for arraying in advance a hatching egg between each of the light emitter and the light receiver corresponding thereto. Each hatching egg is inspected by the corresponding light receiver that receives, among the lights from all the light emitter, transmitted light that transmitted through the interior of the hatching egg. When one light emitter of the plurality of light emitter is emitting light, other of the light emitter within a prescribed range centered on the one light emitter do not emit light.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: November 15, 2016
    Assignee: NABEL Co., Ltd.
    Inventors: Kunio Nambu, Kenji Yasuda, Toyoaki Ohashi, Hiroshige Iguchi
  • Patent number: 9453748
    Abstract: A flow meter device includes: an inlet portion, into which a fluid flows; an outlet portion, from which the fluid flows out; a plurality of measurement passage portions provided parallel to each other between the inlet portion and the outlet portion; and at least one flow rate measurement unit, each flow rate measurement unit being configured to measure a flow rate of the fluid that flows through a passage in a corresponding one of the measurement passage portions. Shapes of passages in the respective measurement passage portions coincide with each other. The plurality of measurement passage portions include: the one measurement passage portion(s), which is/are each provided with the flow rate measurement unit; and the other measurement passage portion(s), which is/are not provided with the flow rate measurement unit.
    Type: Grant
    Filed: October 9, 2013
    Date of Patent: September 27, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kenji Yasuda, Akihisa Adachi, Yuji Fujii, Yuji Nakabayashi, Yukio Sakaguchi, Hirokazu Gotou, Yasuharu Kawano, Aoi Watanabe
  • Patent number: 9447447
    Abstract: In the present invention, a cardiomyocyte cluster is disposed on a transparent substrate, and the quality of the cardiomyocytes is evaluated from the response of the cells to a forced pulsation stimulus applied to the cardiomyocytes. The cardiomyocyte cluster is disposed on the transparent substrate, and is exposed to the flow of a liquid containing an agent in a manner so that the agent acts on the cells, which configure a network. The extent of cardiac toxicity resulting from the agent is evaluated from measuring the fluctuations obtained from a comparison of adjacent cardiomyocytes of the network.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: September 20, 2016
    Assignees: National University Corporation Tokyo Medical and Dental University, LSI Medience Corporation
    Inventors: Kenji Yasuda, Tomoyuki Kaneko, Fumimasa Nomura
  • Publication number: 20160255820
    Abstract: A hatching egg inspection apparatus includes: a plurality of light emitter, the light emitter being disposed two dimensionally at prescribed positions; light receiver, which are provided in a one-to-one relationship with the light emitter and each of which receives light from the corresponding light emitter; and an egg container, which is for arraying in advance a hatching egg between each of the light emitter and the light receiver corresponding thereto. Each hatching egg is inspected by the corresponding light receiver that receives, among the lights from all the light emitter, transmitted light that transmitted through the interior of the hatching egg. When one light emitter of the plurality of light emitter is emitting light, other of the light emitter within a prescribed range centered on the one light emitter do not emit light.
    Type: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Inventors: Kunio NAMBU, Kenji YASUDA, Toyoaki OHASHI, Hiroshige IGUCHI
  • Patent number: 9435783
    Abstract: A hatching egg inspection apparatus includes: a plurality of light emitter, the light emitter being disposed two dimensionally at prescribed positions; light receiver, which are provided in a one-to-one relationship with the light emitter and each of which receives light from the corresponding light emitter; and an egg container, which is for arraying in advance a hatching egg between each of the light emitter and the light receiver corresponding thereto. Each hatching egg is inspected by the corresponding light receiver that receives, among the lights from all the light emitter, transmitted light that transmitted through the interior of the hatching egg. When one light emitter of the plurality of light emitter is emitting light, other of the light emitter within a prescribed range centered on the one light emitter do not emit light.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: September 6, 2016
    Assignee: NABEL Co., Ltd.
    Inventors: Kunio Nambu, Kenji Yasuda, Toyoaki Ohashi, Hiroshige Iguchi
  • Publication number: 20160011176
    Abstract: Regarding cardiomyocytes and fibroblasts, it is meaningful to develop a device or system whereby, upon the transmission of pulsation from an adjacent cardiomyocyte or fibroblast, cell potential and cell morphology can be accurately measured on a single cell basis and the toxicity of a drug on cardiomyocytes can be examined on the basis of accurately measured cell potential and cell morphology of a single cell. In the present invention, a mass of cardiomyocytes is disposed on a transparent substrate and the qualities of the cardiomyocytes are evaluated depending on the response of the cardiomyocytes to a forced pulsation stimulus that is applied to the pulsating cardiomyocytes. A mass of cardiomyocytes, said mass being disposed on the transparent substrate, is exposed to a flow of a drug-containing liquid so as to allow the drug to act on cells configuring a network.
    Type: Application
    Filed: December 19, 2013
    Publication date: January 14, 2016
    Inventors: Kenji YASUDA, Tomoyuki KANEKO, Fumimasa NOMURA
  • Publication number: 20150308963
    Abstract: A hatching egg inspection apparatus includes: a plurality of light emitter, the light emitter being disposed two dimensionally at prescribed positions; light receiver, which are provided in a one-to-one relationship with the light emitter and each of which receives light from the corresponding light emitter; and an egg container, which is for arraying in advance a hatching egg between each of the light emitter and the light receiver corresponding thereto. Each hatching egg is inspected by the corresponding light receiver that receives, among the lights from all the light emitter, transmitted light that transmitted through the interior of the hatching egg. When one light emitter of the plurality of light emitter is emitting light, other of the light emitter within a prescribed range centered on the one light emitter do not emit light.
    Type: Application
    Filed: May 16, 2014
    Publication date: October 29, 2015
    Inventors: Kunio NAMBU, Kenji YASUDA, Toyoaki OHASHI, Hiroshige IGUCHI
  • Publication number: 20150299758
    Abstract: The present invention provides a method for producing a microscopic object comprising locating a microscopic structure, formed of an organic substance, to be used as a mold on a substrate, depositing an intended element on a surface of the organic structure by a vacuum vapor deposition method or the like, and then decomposing and thus removing the organic structure as the mold by an ultraviolet-ozone process or the like to obtain the microscopic structure formed of only an intended element.
    Type: Application
    Filed: November 8, 2012
    Publication date: October 22, 2015
    Applicant: Kanagawa Academy of Science and Technology
    Inventors: Kenji YASUDA, Hyonchol KIM, Hideyuki TERAZONO, Akihiro HATTORI
  • Publication number: 20150253166
    Abstract: A flow meter device includes: an inlet portion, into which a fluid flows; an outlet portion, from which the fluid flows out; a plurality of measurement passage portions provided parallel to each other between the inlet portion and the outlet portion; and at least one flow rate measurement unit, each flow rate measurement unit being configured to measure a flow rate of the fluid that flows through a passage in a corresponding one of the measurement passage portions. Shapes of passages in the respective measurement passage portions coincide with each other. The plurality of measurement passage portions include: the one measurement passage portion(s), which is/are each provided with the flow rate measurement unit; and the other measurement passage portion(s), which is/are not provided with the flow rate measurement unit.
    Type: Application
    Filed: October 9, 2013
    Publication date: September 10, 2015
    Inventors: Kenji Yasuda, Akihisa Adachi, Yuji Fujii, Yuji Nakabayashi, Yukio Sakaguchi, Hirokazu Gotou, Yasuharu Kawano, Aoi Watanabe
  • Publication number: 20150231635
    Abstract: In labeling a cell, and separating and collecting the cell according to a degree of the labeling using a cell separator, effects on the cell is minimized and the use of the collected cell is facilitated, thereby, when labeling a cell, the cell is labeled in the state where interaction of each cell is retained. In the labeling, a specific labeling material present on a surface of a target cell is taken in the cell via a transporter, and the cell is dispersed one by one to separate the same with a cell separator. Immediately after the separation, the cell is put in a solution not containing the specific labeling substance to remove the specific labeling substance taken in the cell. This series of steps is continuously conducted with a cell separation chip.
    Type: Application
    Filed: March 6, 2015
    Publication date: August 20, 2015
    Applicant: On-Chip Cellomics Consortium
    Inventors: Kazunori Okano, Kenji Yasuda
  • Patent number: D832123
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: October 30, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hiroshi Nakai, Kenji Yasuda, Kouichi Takemura