Patents by Inventor Yoshihiro Ishikawa
Yoshihiro Ishikawa 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).
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Publication number: 20240119351Abstract: A process includes obtaining, according to a predetermined update order of a policy parameter of each agent, a degree of influence on a constraint specific to a first agent and a degree of influence on a system-wide constraint in which a degree of influence by an updated policy parameter of a second agent previous to the first agent in the update order is shared, and in a case where an update width of the policy parameter of the first agent exists in both ranges respectively determined depending on the degree of influence on the constraint specific to the first agent and the degree of influence on the system-wide constraint, updating the policy parameter of the first agent and causing the degree of influence on the system-wide constraints by the updated policy parameter to be shared with a third agent next to the first agent in the update order.Type: ApplicationFiled: June 27, 2023Publication date: April 11, 2024Applicant: Fujitsu LimitedInventors: Yoshihiro OKAWA, Hayato DAN, Natsuki ISHIKAWA, Masatoshi OGAWA
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Publication number: 20240098511Abstract: A non-transitory computer-readable recording medium stores a program for causing a computer to execute a process, the process includes obtaining a third matrix by changing at least one of a position of a target object already installed or a scale of the target object in a two-dimensional second matrix, obtaining three-dimensional second data by superimposing a two-dimensional first matrix and the third matrix, the first matrix being provided for each facility already installed and indicating a position and a scale thereof, and predicting a degree of influence of the target object by inputting the second data, a type of day of week, and time to a machine learning model trained with three-dimensional first data, a type of day of week, and time as input, and with a degree of influence of the target object as output, the first data being obtained by superimposing the first matrix and the second matrix.Type: ApplicationFiled: July 6, 2023Publication date: March 21, 2024Applicant: Fujitsu LimitedInventors: Natsuki ISHIKAWA, Hayato DAN, Yoshihiro OKAWA, Masatoshi OGAWA
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Publication number: 20230355967Abstract: A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.Type: ApplicationFiled: July 6, 2023Publication date: November 9, 2023Applicants: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Kazuhito KISHI, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
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Publication number: 20230287795Abstract: A turbine wheel according to at least one embodiment is a turbine wheel connected to a rotational shaft and configured to rotate about an axis and includes: a hub having a hub surface oblique to the axis in a cross-section along the axis; and a plurality of blades disposed on the hub surface. The turbine wheel includes a plurality of passages each of which is formed between two adjacent blades of the plurality of blades, and a relationship of Aen/Aave>1.01 is satisfied, where Aen is an area of a throat portion of a throat enlarged passage which is at least one of the plurality of passages, and Aave is an average area of throat portions of the plurality of passages.Type: ApplicationFiled: August 24, 2021Publication date: September 14, 2023Applicant: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.Inventors: Yoshihiro ISHIKAWA, Toru HOSHI, Nobuhito OKA
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Patent number: 11730956Abstract: A power supply apparatus includes a power supply configured to apply an alternating current to a magnetic field generation apparatus; and a controller configured to control the alternating current applied by the power supply. The controller controls the power supply to apply the alternating current having a waveform pattern including a plurality of current waveforms having different frequency spectrums from each other.Type: GrantFiled: May 20, 2019Date of Patent: August 22, 2023Assignees: Ricoh Company, Ltd., PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Kazuhito Kishi, Masami Takai, Motokazu Hasegawa, Masataka Akaishi, Masanari Umemura, Yoshihiro Ishikawa, Taisuke Akimoto
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Publication number: 20230086127Abstract: A surgery assistance device includes a battery, loads, a manual switch, a power supply, and a backup power supply. The power supply is connected to a mains power supply and to the loads, and outputs a first power supply voltage to the loads. The manual switch is connected to a portion of the loads. The backup power supply is connected to the battery and to the manual switch, and outputs a second power supply voltage to the portion of the loads when the manual switch is closed.Type: ApplicationFiled: November 30, 2022Publication date: March 23, 2023Applicant: RIVERFIELD INC.Inventors: Yoshihiro ISHIKAWA, Satoshi KANO
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Publication number: 20230080541Abstract: A surgical instrument holding device includes first and second parallel links, a wiring member and a connector. The first parallel link has two first link portions arranged in parallel with each other, each having one end in an axial direction as a first end portion. The second parallel link has two second link portions arranged in parallel with each other, each having one end in an axial direction as a second end portion. The wiring member is disposed along the parallel links. The connector has two first link supporters by which the respective first end portions are rotatably supported, two second link supporters by which the respective second end portions are rotatably supported, a first wiring supporter that supports the wiring member on a part between the two first link supporters, and a second wiring supporter that supports the wiring member on a part between the two second link supporters.Type: ApplicationFiled: November 23, 2022Publication date: March 16, 2023Applicant: RIVERFIELD Inc.Inventor: Yoshihiro ISHIKAWA
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Patent number: 11522376Abstract: In one aspect, the present disclosure discloses a charging system including a battery pack and a charger. The battery pack includes a first battery pack terminal, a second battery pack terminal, and a third battery pack terminal. The second battery pack terminal is spaced apart from the first battery pack terminal in an intersecting direction. The intersecting direction intersects a removal direction of the battery pack from the charger. The charger includes a first charger terminal, a second charger terminal, and a third charger terminal. The second battery pack terminal is arranged so as to pass through an area spaced apart from the third charger terminal in a process of removing the battery pack from the charger.Type: GrantFiled: November 16, 2021Date of Patent: December 6, 2022Assignee: MAKITA CORPORATIONInventors: Hiroshi Inoue, Yoshihiro Ishikawa
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Publication number: 20220325908Abstract: An air-cooling device includes a radiator, a duct, and a fan. The radiator includes a radiator core and a frame connected to an outer peripheral portion of the radiator core. The duct is disposed forward of the radiator. The duct includes an opening disposed forward of the radiator core and an air guide that extends from the frame to an end of the opening. The fan causes air to flow from the opening to the radiator core. The frame is disposed to extend from a position on one side of a straight line to a position on an opposite side of the straight line, the straight line extending rearward from the end of the opening. A connecting portion between the frame and the air guide is located at a distance from the straight line.Type: ApplicationFiled: March 11, 2022Publication date: October 13, 2022Inventors: Hideo NISHIOKA, Yoshihiro ISHIKAWA, Hiroki TANAKA
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Publication number: 20220314016Abstract: A cancer treatment apparatus including a magnetic field generator that generates a magnetic field of 100 kHz to 300 kHz to be applied to affected tissues.Type: ApplicationFiled: June 9, 2022Publication date: October 6, 2022Inventors: Yoshihiro ISHIKAWA, Masanari UMEMURA, Taisuke AKIMOTO
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Patent number: 11411408Abstract: A charging system in one aspect of the present disclosure includes a battery pack and a charger. The battery pack includes a battery and an information output circuit. The information output circuit outputs faulty state information in response to receiving a faulty state information request. The faulty state information indicates that the battery pack is in a first faulty state. The charger includes a charging power generation circuit, a charging control circuit, and a reception circuit. The charging control circuit transmits the faulty state information request. The reception circuit receives the faulty state information.Type: GrantFiled: December 13, 2019Date of Patent: August 9, 2022Assignee: MAKITA CORPORATIONInventors: Hisakazu Okabayashi, Yoshihiro Ishikawa
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Patent number: 11383094Abstract: A cancer treatment apparatus including a magnetic field generator that generates a magnetic field of 100 kHz to 300 kHz to be applied to affected tissues.Type: GrantFiled: November 22, 2017Date of Patent: July 12, 2022Assignee: Public University Corporation Yokohama City UniversityInventors: Yoshihiro Ishikawa, Masanari Umemura, Taisuke Akimoto
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Patent number: 11306602Abstract: In a guide vane according to an embodiment of the invention, where in a section perpendicular to a guide vane rotation axis, a curvature of a contour line forming a runner side vane surface of the guide vane is referred to as a positive curvature when the contour line is formed to be convex, while the curvature of the contour line is referred to as a negative curvature when the contour line is formed to be concave, a negative curvature portion where the curvature of the contour line becomes negative is provided on the runner side vane surface. The negative curvature portion is formed from an upper end portion to a lower end portion of the runner side vane surface.Type: GrantFiled: January 19, 2021Date of Patent: April 19, 2022Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Hideyuki Kawajiri, Yoshihiro Ishikawa, Hajime Koyama, Yukito Yada
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Publication number: 20220077700Abstract: In one aspect, the present disclosure discloses a charging system including a battery pack and a charger. The battery pack includes a first battery pack terminal, a second battery pack terminal, and a third battery pack terminal. The second battery pack terminal is spaced apart from the first battery pack terminal in an intersecting direction. The intersecting direction intersects a removal direction of the battery pack from the charger. The charger includes a first charger terminal, a second charger terminal, and a third charger terminal. The second battery pack terminal is arranged so as to pass through an area spaced apart from the third charger terminal in a process of removing the battery pack from the charger.Type: ApplicationFiled: November 16, 2021Publication date: March 10, 2022Applicant: MAKITA CORPORATIONInventors: Hiroshi INOUE, Yoshihiro ISHIKAWA
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Patent number: 11261878Abstract: A vaned diffuser provided on a downstream side of an impeller of a centrifugal compressor. The vaned diffuser includes: a diffuser passage forming portion having a hub-side surface and a shroud-side surface and forming an annular diffuser passage on a downstream side of the impeller; and a plurality of diffuser vanes provided in the diffuser passage at intervals in a circumferential direction of the impeller. A fillet is formed in a connection portion between each of the diffuser vanes and at least one of the hub-side surface and the shroud-side surface. Also, where R is a radius of the fillet and b is a vane height of each of the diffuser vanes, and a maximum value of R/b on a downstream side of a throat position of the diffuser passage is larger than a maximum value of R/b on an upstream side of the throat position of the diffuser passage.Type: GrantFiled: February 3, 2020Date of Patent: March 1, 2022Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshihiro Ishikawa, Isao Tomita, Kenichiro Iwakiri
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Patent number: 11205908Abstract: In one aspect, the present disclosure discloses a charging system including a battery pack and a charger. The battery pack includes a first battery pack terminal, a second battery pack terminal, and a third battery pack terminal. The second battery pack terminal is spaced apart from the first battery pack terminal in an intersecting direction. The intersecting direction intersects a removal direction of the battery pack from the charger. The charger includes a first charger terminal, a second charger terminal, and a third charger terminal. The second battery pack terminal is arranged so as to pass through an area spaced apart from the third charger terminal in a process of removing the battery pack from the charger.Type: GrantFiled: November 29, 2019Date of Patent: December 21, 2021Assignee: MAKITA CORPORATIONInventors: Hiroshi Inoue, Yoshihiro Ishikawa
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Publication number: 20210140332Abstract: In a guide vane according to an embodiment of the invention, where in a section perpendicular to a guide vane rotation axis, a curvature of a contour line forming a runner side vane surface of the guide vane is referred to as a positive curvature when the contour line is formed to be convex, while the curvature of the contour line is referred to as a negative curvature when the contour line is formed to be concave, a negative curvature portion where the curvature of the contour line becomes negative is provided on the runner side vane surface. The negative curvature portion is formed from an upper end portion to a lower end portion of the runner side vane surface.Type: ApplicationFiled: January 19, 2021Publication date: May 13, 2021Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATIONInventors: Hideyuki KAWAJIRI, Yoshihiro ISHIKAWA, Hajime KOYAMA, Yukito YADA
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Publication number: 20210054850Abstract: A vaned diffuser provided on a downstream side of an impeller of a centrifugal compressor. The vaned diffuser includes: a diffuser passage forming portion having a hub-side surface and a shroud-side surface and forming an annular diffuser passage on a downstream side of the impeller; and a plurality of diffuser vanes provided in the diffuser passage at intervals in a circumferential direction of the impeller. A fillet is formed in a connection portion between each of the diffuser vanes and at least one of the hub-side surface and the shroud-side surface. Also, where R is a radius of the fillet and b is a vane height of each of the diffuser vanes, and a maximum value of R/b on a downstream side of a throat position of the diffuser passage is larger than a maximum value of R/b on an upstream side of the throat position of the diffuser passage.Type: ApplicationFiled: February 3, 2020Publication date: February 25, 2021Inventors: Yoshihiro ISHIKAWA, Isao TOMITA, Kenichiro IWAKIRI
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Publication number: 20200203968Abstract: A charging system in one aspect of the present disclosure includes a battery pack and a charger. The battery pack includes a battery and an information output circuit. The information output circuit outputs faulty state information in response to receiving a faulty state information request. The faulty state information indicates that the battery pack is in a first faulty state. The charger includes a charging power generation circuit, a charging control circuit, and a reception circuit. The charging control circuit transmits the faulty state information request. The reception circuit receives the faulty state information.Type: ApplicationFiled: December 13, 2019Publication date: June 25, 2020Applicant: MAKITA CORPORATIONInventors: Hisakazu OKABAYASHI, Yoshihiro ISHIKAWA
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Publication number: 20200177005Abstract: In one aspect, the present disclosure discloses a charging system including a battery pack and a charger. The battery pack includes a first battery pack terminal, a second battery pack terminal, and a third battery pack terminal. The second battery pack terminal is spaced apart from the first battery pack terminal in an intersecting direction. The intersecting direction intersects a removal direction of the battery pack from the charger. The charger includes a first charger terminal, a second charger terminal, and a third charger terminal. The second battery pack terminal is arranged so as to pass through an area spaced apart from the third charger terminal in a process of removing the battery pack from the charger.Type: ApplicationFiled: November 29, 2019Publication date: June 4, 2020Applicant: MAKITA CORPORATIONInventors: Hiroshi INOUE, Yoshihiro ISHIKAWA