Patents Assigned to National University Corporation Yokohama National University
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Publication number: 20250105714Abstract: A magnetic gap length estimating device of the present application includes a voltage acquisition circuitry to acquire a line-to-line induced voltage induced in connection lines between an inverter and an electric rotating machine with a plurality of groups and phases, an estimation information creation circuitry to create estimation information for estimating a magnetic gap length from the waveform of the line-to-line induced voltage when the electric rotating machine is rotated in an unloaded state, and an instantaneous gap length estimation circuitry to estimate an instantaneous magnetic gap length from an instantaneous value of the line-to-line induced voltage and the estimation information.Type: ApplicationFiled: February 9, 2022Publication date: March 27, 2025Applicants: Mitsubishi Electric Corporation, National University Corporation YOKOHAMA National UniversityInventors: Kodai OKAZAKI, Kan AKATSU
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Patent number: 12259830Abstract: A device includes a first interface unit connected to a first controller area network (CAN) bus, a second interface unit connected to a second CAN bus, and a control unit configured to identify, in a case where transmission of a CAN frame is started, a CAN bus detected to be in a dominant state first after end of arbitration from the first CAN bus or the second CAN bus, as a CAN bus to which a transmission source device of the CAN frame is connected.Type: GrantFiled: August 28, 2023Date of Patent: March 25, 2025Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, National University Corporation YOKOHAMA National UniversityInventors: Yosuke Maekawa, Camille Gay, Tsutomu Matsumoto
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Patent number: 12240940Abstract: The present invention provides an epoxy resin having good heat resistance when formed into an epoxy resin cured product, and also provides an epoxy resin cured product an epoxy resin composition. The epoxy resin is represented by formula (1) below. In the formula (1), R1 to R12 are each independently a hydrogen atom, a halogen atom, a hydroxyl group, an alkoxy group, an aralkyloxy group, an aryloxy group, a nitro group, an amino group, an amide group, a carboxyl group, an alkyloxycarbonyl group, an aryloxycarbonyl group, a formyl group, a cyano group, an alkyl group, a cycloalkyl group, an aralkyl group, or an aryl group.Type: GrantFiled: September 8, 2020Date of Patent: March 4, 2025Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DIC CorporationInventors: Toshiyuki Oyama, Yuichiro Tokoro, Seiryu Umetani
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Patent number: 12222523Abstract: A prism lens includes a prism lens body and at least one cylindrical lens. The prism lens body has a set of facing planes a mutual distance of which decreases or increases from one end to another end. The cylindrical lens is integral to at least one plane of the set of planes. The cylindrical lens is formed such that a cross section shape thereof at a plane perpendicular to a direction of a slope of a plane of the prism lens body having the cylindrical lens thereon with respect to the other plane of the set of planes has a certain curved shape to be convex against the plane having the cylindrical lens thereon.Type: GrantFiled: October 17, 2019Date of Patent: February 11, 2025Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Toshihiko Baba, Hiroshi Abe, Daichi Akiyama
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Publication number: 20250013296Abstract: A virtual space image generation device generates a virtual space image including a visibility change region in which a visibility changes based on movement of a viewpoint of a user. The virtual space image generation device includes an image generation unit that generates the virtual space image in which a degree of change in visibility of the visibility change region changes with elapse of time, when the viewpoint of the user moves. According to the virtual space image generation device, the virtual space image that achieves visibility close to that of the appearance of a real space can be generated when the viewpoint of the user moves.Type: ApplicationFiled: March 22, 2022Publication date: January 9, 2025Applicants: SUZUKI MOTOR CORPORATION, National University Corporation Yokohama National UniversityInventors: Daisuke NEGISHI, Hidenori HORITA, Katsunori OKAJIMA, Shumpei ONUKI
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Patent number: 12178573Abstract: A bilirubin concentration measurement system including: a sensor device attachable to a subject; and a terminal device capable of wirelessly communicating with the sensor device. The sensor device includes: a light emitting diode that emits blue light; a light emitting diode that emits green light; a light detection diode that detects reflected light that is the blue light having been incident on skin of the subject and reflected, and detects reflected light that is the green light having been incident on the skin of the subject and reflected; and a communication unit that wirelessly transmits information about intensities of the reflected light detected by the photodiode. The terminal device includes: a communication unit that receives the information about the intensities of the reflected light transmitted from the sensor device; and a computing unit that calculates a bilirubin concentration using the information about the intensities of the reflected light.Type: GrantFiled: December 17, 2019Date of Patent: December 31, 2024Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, PUBLIC UNIVERSITY CORPORATION YOKOHAMA CITY UNIVERSITYInventors: Hiroki Ota, Yutaka Isoda, Go Inamori, Shuichi Ito, Azusa Uozumi
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Publication number: 20240393875Abstract: A virtual space image generation device generates a virtual space image including a visibility change region in which a visibility changes based on movement of a viewpoint of a user. The virtual space image generation device includes an image generation unit that generates the virtual space image in which a transition completion time period required for transition of a visibility of the visibility change region between a first state and a second state different from the first state changes based on a predetermined condition, when the viewpoint of the user moves. Accordingly, the virtual space image that achieves visibility close to that of the appearance of a real space can be generated when the viewpoint of the user moves.Type: ApplicationFiled: March 22, 2022Publication date: November 28, 2024Applicants: SUZUKI MOTOR CORPORATION, National University Corporation Yokohama National UniversityInventors: Daisuke NEGISHI, Hidenori HORITA, Katsunori OKAJIMA, Shumpei ONUKI
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Patent number: 12142769Abstract: Provided is a novel oxygen reduction catalyst having good stability and higher oxygen reduction performance. The oxygen reduction catalyst includes a composite oxide comprising a conductive tin oxide containing Zr.Type: GrantFiled: June 9, 2020Date of Patent: November 12, 2024Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Akimitsu Ishihara, Takaaki Nagai
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Patent number: 12076914Abstract: A molding device includes a movement processing unit configured to move a liquid column sandwiched between two substrates and a molding unit configured to perform a molding process by partially changing the liquid column to a solid within a prescribed molding region.Type: GrantFiled: November 18, 2020Date of Patent: September 3, 2024Assignee: National University Corporation Yokohama National UniversityInventors: Shoji Maruo, Hiroyuki Tadokoro, Hotaka Hirata
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Patent number: 12065521Abstract: A radical polymerization method may use a compound having a polycyclic aromatic skeleton and an endoperoxide compound having a polycyclic aromatic skeleton. An endoperoxide compound may have a polycyclic aromatic skeleton of formula (1), and a compound may have a polycyclic aromatic skeleton, which is a raw material of the endoperoxide compound: wherein R is a C1-10 alkyl group, an alkoxymethyl group having a C1-5 alkoxy group, a C6-10 aryl group, an alkylcarbonyl group having a C1-10 alkyl group, an arylcarbonyl group having a C6-20 aryl group, an alkyloxycarbonyl group having a C1-10 alkyl group, an aryloxycarbonyl group having a C6-10 aryl group, an alkyloxycarbonylmethyl group having a C1-12 alkyl group or an aryloxycarbonylmethyl group having a C6-12 aryl group.Type: GrantFiled: February 12, 2019Date of Patent: August 20, 2024Assignees: Kawasaki Kasei Chemicals Ltd., National University Corporation YOKOHAMA National UniversityInventors: Shunichi Himori, Keita Iuchi, Akihiko Yamada, Hiroaki Gotoh, Kazuhisa Sakakibara
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Publication number: 20240274043Abstract: In a visibility information acquisition device, a display control unit displays a first identifier at a first position ahead of a subject and subsequently displays a second identifier at a second position spaced in the front-back direction from the first position, and moves the viewpoint of the subject from the first position to the second position. The display control unit then controls the display state of the second identifier according to the transition condition, and causes the visibility of the second identifier to transition from a reference state to an intended state different from the reference state. The visibility information on the second identifier during transition is acquired by an information acquisition unit. Accordingly, information required to allow generation of a virtual space image that achieves visibility close to that of the appearance of a real space can be acquired at high accuracy when the viewpoint is moved.Type: ApplicationFiled: March 22, 2022Publication date: August 15, 2024Applicants: SUZUKI MOTOR CORPORATION, National University Corporation Yokohama National UniversityInventors: Daisuke NEGISHI, Hidenori HORITA, Katsunori OKAJIMA, Shumpei ONUKI
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Patent number: 12060696Abstract: A management system includes a course data generation unit that generates course data for each of a plurality of unmanned vehicles such that loading work for the plurality of unmanned vehicles by a loader is sequentially performed on a work site where a plurality of the loaders operates; and a priority determination unit that determine a passage order at an intersection on the work site of the plurality of unmanned vehicles traveling according to the course data so as to reduce a total loading loss indicating a total of loss amounts in operation of each of the plurality of the loaders.Type: GrantFiled: January 14, 2021Date of Patent: August 13, 2024Assignees: Komatsu Ltd., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Yusuke Maeda, Yudai Ogawa, Kenta Osagawa, Atsushi Sakai, Yasuchika Matsui
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Patent number: 12049401Abstract: Provided is a fullerene structure including: a column-shaped part; and a fin part projecting from the column-shaped part, in which both of the column-shaped part and the fin part are fullerenes. Provided is a method of manufacturing a fullerene structure including: heating a fullerene raw material to a sublimable temperature or higher under a non-oxidizing gas; and cooling an atmosphere in which the fullerene raw material is heated. In one example, the method includes supplying the non-oxidizing gas in one direction; heating the fullerene raw material to the sublimable temperature or higher at an upstream side of a supply direction of the non-oxidizing gas; and cooling the atmosphere in which the fullerene raw material is heated at a downstream side of the supply direction of the non-oxidizing gas.Type: GrantFiled: July 27, 2022Date of Patent: July 30, 2024Assignees: THE UNIVERSITY OF ELECTRO-COMMUNICATIONS, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Takahiro Tsukamoto, Takahide Oya, Taku Onishi
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Patent number: 12036725Abstract: A shaping apparatus includes: a movement processing unit that heats a droplet such that a temperature of the droplet on a peripheral side in a horizontal direction becomes higher than that on a center side in the horizontal direction and move the droplet by moving a heating area; and a shaping unit that performs shaping by partially changing the droplet into a solid in a predetermined shaping area.Type: GrantFiled: March 6, 2020Date of Patent: July 16, 2024Assignee: National University Corporation Yokohama National UniversityInventors: Shoji Maruo, Hotaka Hirata, Taichi Furukawa
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Publication number: 20240162790Abstract: Provided is a magnetic gap length estimating device in which neither a current sensor nor a current load is necessary, and a voltage at a connection-wire neutral point does not need to be measured. A magnetic gap length estimating device for estimating a magnetic gap length in an M-group N-phase rotating electric machine to be driven by an inverter includes: a voltage acquiring unit which acquires a no-load-induced line-to-line voltage induced under no load; and a magnetic gap estimating unit. The magnetic gap estimating unit includes: a spectrum analysis unit which converts the no-load-induced line-to-line voltage acquired by the voltage acquiring unit into amplitudes and phases for respective frequencies; a frequency analysis unit which extracts amplitudes and phases of a fundamental wave component and an Nth-order harmonic component of the no-load-induced line-to-line voltage; and an estimating-and-calculating unit which estimates the magnetic gap length.Type: ApplicationFiled: March 24, 2021Publication date: May 16, 2024Applicants: Mitsubishi Electric Corporation, National University Corporation YOKOHAMA National UniversityInventors: Kodai OKAZAKI, Kan AKATSU
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Patent number: 11965256Abstract: The present invention provides an alkaline water electrolysis anode such that even when electric power having a large output fluctuation, such as renewable energy, is used as a power source, the electrolysis performance is unlikely to be deteriorated and excellent catalytic activity is retained stably over a long period of time. The alkaline water electrolysis anode is an alkaline water electrolysis anode 10 provided with an electrically conductive substrate 2 at least a surface of which contains nickel or a nickel base alloy and a catalyst layer 6 disposed on the surface of the electrically conductive substrate 2, the catalyst layer 6 containing a nickel-containing metal oxide having a spinel structure, wherein the nickel-containing metal oxide contains nickel (Ni) and manganese (Mn), and has an atom ratio of Li/Ni/Mn/O of (0.0 to 0.8)/(0.4 to 0.6)/(1.0 to 1.8)/4.0.Type: GrantFiled: October 14, 2021Date of Patent: April 23, 2024Assignees: KYOTO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTDInventors: Yoshiharu Uchimoto, Tomoki Uchiyama, Shigenori Mitsushima, Yoshiyuki Kuroda, Kensaku Nagasawa, Yoshinori Nishiki, Awaludin Zaenal, Yun Bao
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Publication number: 20240070097Abstract: A device includes a first interface unit connected to a first controller area network (CAN) bus, a second interface unit connected to a second CAN bus, and a control unit configured to identify, in a case where transmission of a CAN frame is started, a CAN bus detected to be in a dominant state first after end of arbitration from the first CAN bus or the second CAN bus, as a CAN bus to which a transmission source device of the CAN frame is connected.Type: ApplicationFiled: August 28, 2023Publication date: February 29, 2024Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, National University Corporation YOKOHAMA National UniversityInventors: Yosuke MAEKAWA, Camille GAY, Tsutomu MATSUMOTO
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Patent number: 11912952Abstract: A material comprising: a support 10; and a brush layer 20 containing a brush-like polymer chain assemblage 21 formed of a plurality of polymer chains and a swelling liquid 22, in which a brush layer 20 is swollen with the swelling liquid 22, the brush layer 20 retaining on the surface a lubricating liquid 30, and the swelling liquid 22 contained in the brush layer 20 and the lubricating liquid 30 being phase-separated to form a liquid-liquid phase separation interface 40 in between and a sliding system using the material.Type: GrantFiled: December 1, 2020Date of Patent: February 27, 2024Assignees: KYOTO UNIVERSITY, NATIONAL INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Yoshinobu Tsujii, Keita Sakakibara, Takaya Sato, Hiroyuki Arafune, Ken Nakano, Mayu Miyazaki
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Patent number: 11873604Abstract: A high-temperature-steam-oxidation-resistive coated reinforcement fiber applicable to a fiber reinforced composite, is provided with: a reinforcement fiber; a coating layer covering the reinforcement fiber and including a rare-earth silicate; an exfoliative layer intervening in an interface between the coating layer and the reinforcement fiber; and a supplemental coating layer covering the reinforcement fiber, the exfoliative layer and the coating layer.Type: GrantFiled: May 19, 2020Date of Patent: January 16, 2024Assignees: IHI CORPORATION, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, JAPAN FINE CERAMICS CENTERInventors: Takeshi Nakamura, Masahiro Kotani, Ken Goto, Akihiko Ito, Satoshi Kitaoka, Daisaku Yokoe, Tetsushi Matsuda
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Publication number: 20240006591Abstract: A mixing process of mixing a lithium-transition metal composite oxide with lithium phosphate; a milling process of applying mechanical stress to a mixture obtained in the mixing process to form the lithium-transition metal composite oxide having a layered crystal structure and the lithium phosphate into an amorphous or low-crystalline NiO-like rock-salt type crystal structure; and a heat treatment process of subjecting the mixture to a heat treatment to obtain a lithium-transition metal composite oxide having a layered rock-salt type crystal structure in which lithium phosphate is finely crystallized and dispersed, wherein the lithium-transition metal composite oxide is represented by a general formula: LisNi1-x-y-zCoxMnyMzO2+?, and the crystallized lithium phosphate covers a surface of a primary particle of the lithium-transition metal composite oxide, and is dispersed inside or on a surface of a secondary particle of the lithium-transition metal composite oxide having the layered rock-salt type crystal struType: ApplicationFiled: September 27, 2021Publication date: January 4, 2024Applicants: SUMITOMO METAL MINING CO., LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Taira AIDA, Naoaki YABUUCHI