Patents by Inventor Kenji Sakakibara

Kenji Sakakibara 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: 20240093703
    Abstract: A hydraulic supply device includes: a first oil pump configured to supply oil to a supply passage; a second oil pump driven together with the first oil pump or driven when the first oil pump is stopped; a first check valve provided in a first oil passage that allows a suction side of the second oil pump to communicate with an oil source, and configured to close the first oil passage when the second oil pump is stopped; a second check valve provided in a second oil passage that allows a discharge side of the second oil pump to communicate with the supply passage, and configured to close the second oil passage when the second oil pump is stopped; and a third oil passage into which the oil supplied to the supply passage flows, wherein the oil flowing into the third oil passage is used as an auxiliary pressure for operation of the second check valve when the second oil passage is closed.
    Type: Application
    Filed: January 18, 2022
    Publication date: March 21, 2024
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Tomoko SUGANO, Takurou KAWASUMI, Kenji SAKAKIBARA
  • Patent number: 11458102
    Abstract: A preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent dissolution properties, preferable hardness and high drug content uniformity and a manufacturing method thereof. Acetaminophen has a preset particle size and is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed, manufacturing efficiency can be elevated and the cost for manufacturing is also reduced. Thus, an acetaminophen preparation having improved administrability, for example, a reduced size and a manufacturing method thereof are highly useful.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 4, 2022
    Assignee: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi Sakamoto, Kunio Komai, Kenji Sakakibara, Hirokazu Banba, Kiyoshi Fukuda
  • Patent number: 11433031
    Abstract: A method for manufacturing a preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent elution properties, preferable hardness and high drug content uniformity, and a premix drug substance of acetaminophen which has improved manufacturability. According to the method in which acetaminophen having a preset particle size is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed and manufacturing efficiency can be elevated. Thus, this method is highly useful for manufacturing an acetaminophen preparation having improved administrability, for example, a reduced size.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: September 6, 2022
    Assignee: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi Sakamoto, Kunio Komai, Kenji Sakakibara, Hirokazu Banba, Kiyoshi Fukuda
  • Publication number: 20220154818
    Abstract: The control valve assembly is provided with a reinforcing portion straddling a drain port, the drain port allowing communication between an inside and an outside of the control valve assembly. The reinforcing portion is provided along a bore in which a spool of the control valve for control is housed. The control valve for control is a pressure regulator vale regulating a line pressure, the line pressure being a primary pressure of a hydraulic oil of the automatic transmission.
    Type: Application
    Filed: November 13, 2019
    Publication date: May 19, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Jongho PARK, Yuhyung NAM, Jungil PARK, Kenji SAKAKIBARA, Hiroyuki TSUBOI, Akiko IMAI, Hiroki SAITO
  • Publication number: 20210220283
    Abstract: A method for manufacturing a preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent elution properties, preferable hardness and high drug content uniformity, and a premix drug substance of acetaminophen which has improved manufacturability. According to the method in which acetaminophen having a preset particle size is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed and manufacturing efficiency can be elevated. Thus, this method is highly useful for manufacturing an acetaminophen preparation having improved administrability, for example, a reduced size.
    Type: Application
    Filed: April 5, 2021
    Publication date: July 22, 2021
    Applicant: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi SAKAMOTO, Kunio KOMAI, Kenji SAKAKIBARA, Hirokazu BANBA, Kiyoshi FUKUDA
  • Publication number: 20210186884
    Abstract: A preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent dissolution properties, preferable hardness and high drug content uniformity and a manufacturing method thereof. Acetaminophen has a preset particle size and is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed, manufacturing efficiency can be elevated and the cost for manufacturing is also reduced. Thus, an acetaminophen preparation having improved administrability, for example, a reduced size and a manufacturing method thereof are highly useful.
    Type: Application
    Filed: November 8, 2018
    Publication date: June 24, 2021
    Applicant: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi SAKAMOTO, Kunio KOMAI, Kenji SAKAKIBARA, Hirokazu BANBA, Kiyoshi FUKUDA
  • Patent number: 11033501
    Abstract: A method for manufacturing a preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent elution properties, preferable hardness and high drug content uniformity, and a premix drug substance of acetaminophen which has improved manufacturability. According to the method in which acetaminophen having a preset particle size is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed and manufacturing efficiency can be elevated. Thus, this method is highly useful for manufacturing an acetaminophen preparation having improved administrability, for example, a reduced size.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: June 15, 2021
    Assignee: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi Sakamoto, Kunio Komai, Kenji Sakakibara, Hirokazu Banba, Kiyoshi Fukuda
  • Patent number: 10638950
    Abstract: In order to provide a static magnetic field homogeneity adjustment method capable of reducing an arrangement amount of magnetic pieces and achieving desired magnetic field homogeneity with high accuracy in magnetic field homogeneity adjustment, there is provided a static magnetic field homogeneity adjustment method in an imaging space of computing positions of a plurality of magnetic pieces separated from the imaging space through shimming computation with respect to a static magnetic field in the imaging space generated by a magnetic field generation device, and disposing the plurality of magnetic pieces at the positions obtained through the shimming computation, the method including an adjustment step of imposing restriction that a polarity of a magnetic field distribution generated in the imaging space by the magnetic pieces disposed at the positions is either positive or negative during the shimming computation, and adjusting the static magnetic field homogeneity.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: May 5, 2020
    Assignee: HITACHI, LTD.
    Inventors: Takuya Fujikawa, Mitsushi Abe, Kenji Sakakibara, Hikaru Hanada
  • Patent number: 10514432
    Abstract: In the present invention, a current plane which is virtually disposed and surrounds a measurement position is assumed from magnetic field measurement values, and a current distribution (or magnetic moment distribution) which mimics a measured magnetic field is reproduced with current potentials. This is used to perform shimming calculation by a truncated singular value decomposition method with discrete shim trays that are actually used and ideal virtual continuous shim trays to carry out shimming under conditions for shimming having a uniformity that is close to ideal shimming.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: December 24, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Mitsushi Abe, Kenji Sakakibara, Takuya Fujikawa, Hikaru Hanada
  • Patent number: 10408903
    Abstract: The present invention provides a shimming method in which an electric current surface that is virtually placed so as to surround a measurement position is assumed from a magnetic field measurement value, in which an electric current distribution that reproduces a measurement magnetic field is reproduced through an electric current potential, and in which the reproduced magnetic field distribution is used. A magnetic moment or an electric current distribution that reproduces a magnetic field distribution obtained by a magnetic field measurement device is estimated on a predetermined closed surface, and, from the estimated magnetic moment or electric current distribution, a magnetic field distribution of an arbitrary point that exists in the closed surface is estimated. Then, on the basis of the estimated magnetic field distribution, a shim magnetic body distribution that produces a correction magnetic field for correcting the magnetic field distribution at the arbitrary point is output.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: September 10, 2019
    Assignee: Hitachi, Ltd.
    Inventors: Mitsushi Abe, Kenji Sakakibara, Takuya Fujikawa, Hikaru Hanada
  • Patent number: 10379183
    Abstract: A magnetic moment arrangement calculation method for magnetic field adjustment by combining correction of a component of a low-order mode with correction of a component of a high-order mode among the eigenmodes so as to calculate arrangement of the magnetic moment for approximately correcting the error magnetic field distribution, in which the low-order mode is an eigenmode group from the first of eigenmode numbers assigned to respective eigenmodes in the magnitude order of singular values to an eigenmode number specified by a first threshold value, in which the high-order mode is an eigenmode group with an eigenmode number more than the first threshold value, and in which a correction amount of the component of the high-order mode is smaller than a correction amount of the component of the low-order mode.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 13, 2019
    Assignee: HITACHI, LTD.
    Inventors: Hikaru Hanada, Kenji Sakakibara, Mitsushi Abe, Takuya Fujikawa
  • Publication number: 20190142754
    Abstract: A method for manufacturing a preparation which contains acetaminophen at a high content, in particular, a miniaturized tablet (conventional tablets, sustained-release tablets, etc.) which have excellent elution properties, preferable hardness and high drug content uniformity, and a premix drug substance of acetaminophen which has improved manufacturability. According to the method in which acetaminophen having a preset particle size is used for manufacturing a preparation, the flowability of acetaminophen can be improved so that secondary agglomeration can be suppressed and manufacturing efficiency can be elevated. Thus, this method is highly useful for manufacturing an acetaminophen preparation having improved administrability, for example, a reduced size.
    Type: Application
    Filed: May 9, 2017
    Publication date: May 16, 2019
    Applicant: NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Hiroshi SAKAMOTO, Kunio KOMAI, Kenji SAKAKIBARA, Hirokazu BANBA, Kiyoshi FUKUDA
  • Patent number: 10267877
    Abstract: Even if there is a restriction in an amount of magnetic pieces which can be disposed at each position in a shim tray, a distribution of a static magnetic field is measured so that an error magnetic field between the distribution of the static magnetic field and a target magnetic field is calculated, and respective reachable magnetic field homogeneities in a case where the magnetic pieces are disposed at one or more of the plurality of positions in the shim tray are calculated while changing the target magnetic field. The target magnetic field is selected in which an amount of magnetic pieces at each of the positions in the shim tray is equal to or less than a predetermined upper limit value, and the reachable magnetic field homogeneity is equal to or less than a predetermined value.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: April 23, 2019
    Assignee: HITACHI, LTD.
    Inventors: Kenji Sakakibara, Takuya Fujikawa, Mitsushi Abe, Hikaru Hanada
  • Patent number: 10156619
    Abstract: Static magnetic field inhomogeneity is reduced by measuring inhomogeneity of a static magnetic field distribution in an imaging space, evaluating a distribution of a correction magnetic field that should be generated by a correction magnetic field generating unit disposed in the vicinity of the imaging space based on the measured static magnetic field distribution, reducing the electric current value of the superconducting coil to a predetermined (greater than zero) low current value smaller than a rated current value, notifying an operator to set a correction magnetic field of the correction magnetic field generating unit to the correction magnetic field evaluated by calculation in a state where an electric current at the low current value is flowing in the superconducting coil and a low static magnetic field B_low is being generated, and repeating the above operations.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: December 18, 2018
    Assignee: HITACHI, LTD.
    Inventor: Kenji Sakakibara
  • Publication number: 20180284205
    Abstract: Even if there is a restriction in an amount of magnetic pieces which can be disposed at each position in a shim tray, a distribution of a static magnetic field is measured so that an error magnetic field between the distribution of the static magnetic field and a target magnetic field is calculated, and respective reachable magnetic field homogeneities in a case where the magnetic pieces are disposed at one or more of the plurality of positions in the shim tray are calculated while changing the target magnetic field. The target magnetic field is selected in which an amount of magnetic pieces at each of the positions in the shim tray is equal to or less than a predetermined upper limit value, and the reachable magnetic field homogeneity is equal to or less than a predetermined value.
    Type: Application
    Filed: January 27, 2016
    Publication date: October 4, 2018
    Inventors: Kenji SAKAKIBARA, Takuya FUJIKAWA, Mitsushi ABE, Hikaru HANADA
  • Publication number: 20180246180
    Abstract: The present invention provides a shimming method in which an electric current surface that is virtually placed so as to surround a measurement position is assumed from a magnetic field measurement value, in which an electric current distribution that reproduces a measurement magnetic field is reproduced through an electric current potential, and in which the reproduced magnetic field distribution is used. A magnetic moment or an electric current distribution that reproduces a magnetic field distribution obtained by a magnetic field measurement device is estimated on a predetermined closed surface, and, from the estimated magnetic moment or electric current distribution, a magnetic field distribution of an arbitrary point that exists in the closed surface is estimated. Then, on the basis of the estimated magnetic field distribution, a shim magnetic body distribution that produces a correction magnetic field for correcting the magnetic field distribution at the arbitrary point is output.
    Type: Application
    Filed: February 19, 2016
    Publication date: August 30, 2018
    Inventors: Mitsushi ABE, Kenji SAKAKIBARA, Takuya FUJIKAWA, Hikaru HANADA
  • Patent number: 10060997
    Abstract: To prevent image quality deterioration of an image due to a variable magnetic field generated by a fan motor provided in a position where a measuring magnetic field leaks, a magnetic resonance imaging apparatus has a gantry including a static magnetic field generating magnet; a gradient magnetic field generating coil; and an irradiation coil, a table for placing the object, and an input/output device including a display device and is provided with at least a pair of cooling fan motors arranged almost symmetrically to the central axis that extends along the long-axis direction of the cylindrical space and is located in the center in the horizontal direction of the static magnetic field generating magnet or the vertical plane passing through the central axis.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: August 28, 2018
    Assignee: HITACHI, LTD.
    Inventors: Shin Hoshino, Kenji Sakakibara
  • Patent number: 10042016
    Abstract: There is provided an MRI apparatus including a superconducting magnet that includes a refrigerant container and a superconducting coil, a cryogenic cooling system with which the superconducting magnet is provided, and a controller that controls the operation of the cryogenic cooling system. The cryogenic cooling system includes a cold head, a cryo-cooler, a compressor that supplies a compressed gas to the cryo-cooler, and a detection unit that detects the pressure in the refrigerant container, the refrigerant container being provided with the cold head, the cryo-cooler, the compressor, and the detection unit. An upper limit value of the maximum number of times of halts of the compressor within a predetermined period of time is set in advance.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: August 7, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Hikaru Hanada, Takuya Fujikawa, Akihiro Shimada, Kenji Sakakibara
  • Publication number: 20180188341
    Abstract: There is provided an MRI apparatus including a superconducting magnet that includes a refrigerant container and a superconducting coil, a cryogenic cooling system with which the superconducting magnet is provided, and a controller that controls the operation of the cryogenic cooling system. The cryogenic cooling system includes a cold head, a cryo-cooler, a compressor that supplies a compressed gas to the cryo-cooler, and a detection unit that detects the pressure in the refrigerant container, the refrigerant container being provided with the cold head, the cryo-cooler, the compressor, and the detection unit. An upper limit value of the maximum number of times of halts of the compressor within a predetermined period of time is set in advance.
    Type: Application
    Filed: February 23, 2017
    Publication date: July 5, 2018
    Applicant: HITACHI, LTD.
    Inventors: Hikaru HANADA, Takuya FUJIKAWA, Akihiro SHIMADA, Kenji SAKAKIBARA
  • Patent number: 9958062
    Abstract: A CVTECU includes a secondary-pressure control section and a line-pressure control section that performs a same-pressure control to equalize a line pressure and a secondary pressure with each other if a predetermined start condition is satisfied. The line-pressure control section realizes a same-pressure state between the line pressure and the secondary pressure by lowering the line pressure below a target secondary pressure, and then controls the line pressure such that an actual secondary pressure is brought to the target secondary pressure by hydraulic feedback control while maintaining the same-pressure state. The secondary-pressure control section includes a restriction section that restricts an accumulation of integral term of an integral action for a duration between a time point at which the actual secondary pressure starts to be pushed down and a time point at which the same-pressure state between the line pressure and the secondary pressure is realized.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: May 1, 2018
    Assignee: JATCO Ltd
    Inventors: Tomoaki Honma, Seiichiro Takahashi, Takahiro Kobayashi, Takashi Eguchi, Hisao Nobu, Kenji Sakakibara