Patents Assigned to National University Corporation Yokohama National University
  • Publication number: 20240162790
    Abstract: 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: Application
    Filed: March 24, 2021
    Publication date: May 16, 2024
    Applicants: Mitsubishi Electric Corporation, National University Corporation YOKOHAMA National University
    Inventors: Kodai OKAZAKI, Kan AKATSU
  • Publication number: 20240070097
    Abstract: 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: Application
    Filed: August 28, 2023
    Publication date: February 29, 2024
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, National University Corporation YOKOHAMA National University
    Inventors: Yosuke MAEKAWA, Camille GAY, Tsutomu MATSUMOTO
  • Patent number: 11873604
    Abstract: 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: Grant
    Filed: May 19, 2020
    Date of Patent: January 16, 2024
    Assignees: IHI CORPORATION, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, JAPAN FINE CERAMICS CENTER
    Inventors: Takeshi Nakamura, Masahiro Kotani, Ken Goto, Akihiko Ito, Satoshi Kitaoka, Daisaku Yokoe, Tetsushi Matsuda
  • Publication number: 20240006591
    Abstract: 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 stru
    Type: Application
    Filed: September 27, 2021
    Publication date: January 4, 2024
    Applicants: SUMITOMO METAL MINING CO., LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Taira AIDA, Naoaki YABUUCHI
  • Patent number: 11827497
    Abstract: A work vehicle includes: an operation tool that is operated by an operator; and a controller that determines a target flow rate for hydraulic oil fed to a hydraulic device on a basis of the amount of operation of the operation tool. The controller calculates a bleed-off target flow rate on a basis of the flow rate of hydraulic oil fed from a hydraulic oil pump and the target flow rate for hydraulic oil fed to the hydraulic device, calculates a bleed-off throttle differential pressure on a basis of a pressure of hydraulic oil fed from the hydraulic oil pump and a pressure of hydraulic oil in a hydraulic oil tank, calculates a bleed-off target opening area on a basis of the bleed-off target flow rate and the bleed-off throttle differential pressure, and controls a hydraulic oil control valve such that the bleed-off target opening area is achieved.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: November 28, 2023
    Assignees: TADANO LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Kazushi Sanada, Kazuya Tanizumi, Shinji Noguchi, Naoto Kawabuchi
  • Patent number: 11787696
    Abstract: 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: Grant
    Filed: July 27, 2022
    Date of Patent: October 17, 2023
    Assignees: THE UNIVERSITY OF ELECTRO-COMMUNICATIONS, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Takahiro Tsukamoto, Takahide Oya, Taku Onishi
  • Patent number: 11692276
    Abstract: The present invention realizes industrially excellent effects such that when electric power having a large output fluctuation, such as renewable energy, is used as a power source, electrolysis performance is unlikely to be deteriorated and excellent catalytic activity is retained stably over a longer period of time, and in addition, the present invention provides a technique that enables forming a catalyst layer of an oxygen generation anode, which gives such excellent effects, with a more versatile materials and by a simple electrolysis method.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: July 4, 2023
    Assignees: DE NORA PERMELEC LTD, KAWASAKI JUKOGYO KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Shigenori Mitsushima, Yoshiyuki Kuroda, Shohei Takatsu, Ikuo Nagashima, Tatsuya Taniguchi, Akihiko Inomata, Ayaka Nagai, Yoshinori Nishiki, Akihiro Kato, Awaludin Zaenal, Takaaki Nakai
  • Patent number: 11656122
    Abstract: A photon detection device according to an aspect of the present invention includes: a superconducting photon detector array in which a plurality of superconducting photon detectors (SPDs) are arranged; a plurality of first transmission lines connected to the plurality of SPDs and configured to transmit a detection current output from each of the plurality of SPDs; an address information generation circuit connected to the plurality of first transmission lines and configured to generate, based on the detection current, an address information signal that specifies a superconducting photon detector from which the detection current is output; a second transmission line magnetically coupled to all of the plurality of first transmission lines; and a time information generation circuit connected to the second transmission line and configured to generate, based on the detection current, a time information signal indicating a time at which a photon is incident on the plurality of superconductive photon detection SPDs.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: May 23, 2023
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Naoki Takeuchi, Shigehito Miki, Hirotaka Terai
  • Publication number: 20230137455
    Abstract: Disclosed is a positive electrode active material for a lithium-ion battery, wherein the positive electrode active material has small volume changes during charging and discharging, and when applied to a battery, can improve the cycle characteristics of the battery. The positive electrode active material of the present disclosure has a disordered rock salt structure belonging to space group Fm-3m, and has a composition represented by Li1+xTiyVzO2 (where 0<x?0.20, 0<y?0.40, and 0.40?z?0.85).
    Type: Application
    Filed: November 1, 2022
    Publication date: May 4, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: So YUBUCHI, Jun YOSHIDA, Naoaki YABUUCHI
  • Patent number: 11604983
    Abstract: A neural network system includes a primary input layer configured to acquire data in both a learning mode and an operation mode, an auxiliary input layer configured to acquire data solely in the learning mode, a first partial network configured to carry out learning using both an output of the primary input layer and an output of the auxiliary input layer and to subsequently carry out learning solely using the output of the primary input layer so as to produce a same calculation result as a calculation result produced using both the output of the primary input layer and the output of the auxiliary input layer, and a second partial network configured to carry out calculations in the learning mode and the operation mode upon receiving an output of the first partial network.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: March 14, 2023
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Tomoharu Nagao, Miku Yanagimoto
  • Publication number: 20230052077
    Abstract: 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: Application
    Filed: January 14, 2021
    Publication date: February 16, 2023
    Applicants: Komatsu Ltd., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yusuke Maeda, Yudai Ogawa, Kenta Osagawa, Atsushi Sakai, Yasuchika Matsui
  • Publication number: 20220396027
    Abstract: 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: Application
    Filed: November 18, 2020
    Publication date: December 15, 2022
    Applicant: National University Corporation Yokohama National University
    Inventors: Shoji Maruo, Hiroyuki Tadokoro, Hotaka Hirata
  • Patent number: 11519082
    Abstract: An organic hydride production apparatus includes: an electrolyte membrane having proton conductivity; a cathode that includes a cathode catalyst layer used to hydrogenate a hydrogenation target substance using protons to produce an organic hydride and also includes a cathode chamber; an anode that includes an anode catalyst layer used to oxidize water to produce protons and also includes an anode chamber; and a gas introduction unit that introduces, into the anolyte at a certain position, a certain gas used to remove at least one of the hydrogenation target substance and the organic hydride that have passed through the electrolyte membrane and been mixed into the anolyte.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: December 6, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, DE NORA PERMELEC LTD.
    Inventors: Shigenori Mitsushima, Kensaku Nagasawa, Yoshinori Nishiki, Akihiro Kato, Setsuro Ogata, Awaludin Zaenal, Akiyoshi Manabe, Koji Matsuoka, Yasushi Sato
  • Publication number: 20220363541
    Abstract: 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: Application
    Filed: July 27, 2022
    Publication date: November 17, 2022
    Applicants: THE UNIVERSITY OF ELECTRO-COMMUNICATIONS, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Takahiro TSUKAMOTO, Takahide OYA, Taku ONISHI
  • Patent number: 11495885
    Abstract: A sensor module includes: a metal member having a recessed portion; a resin portion embedded within the recessed portion; a radiator provided within the resin portion and configured to emit radio waves; a wireless communication portion provided within the resin portion and connected to the radiator; and a sensor connected to the wireless communication portion, wherein the metal member is insulated from the radiator by the resin portion and functions as a parasitic element.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: November 8, 2022
    Assignees: SHINKO ELECTRIC INDUSTRIES CO., LTD., National University Corporation YOKOHAMA National University
    Inventors: Tomoharu Fujii, Takumi Ikeda, Hiroyuki Arai
  • Patent number: 11486979
    Abstract: A light receiver array according to the present invention is constituted by array-aligning plural receivers having slow light waveguides of photonic crystals, and a LiDAR device according to the present invention is constituted by linearly arranging a light receiver array and a transmitter. An arranging relationship of plural receivers of the light receiver array is an array-like element formed by array-aligning plural receivers having the slow light waveguides of photonic crystals, and the array alignment is defined by alignment for defining a position relationship between the plural receivers constituting the light receiver array, and orientation for defining a direction of each receiver. A relationship p=?/sin ??r is satisfied between the alignment pitch p, wavelength ? of the reception light, and an arrival angle ??r when a phase difference between reception lights received by waveguide ends of adjacent receivers is one wavelength.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: November 1, 2022
    Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Toshihiko Baba, Keisuke Kondo, Hiroshi Abe
  • Patent number: 11485644
    Abstract: Provided are the following: an MWW type zeolite which has many Brønsted acid sites when in the form of a proton type and which is highly suitable as a cracking catalyst for cumene; a method for producing same; and an application of same. The present invention provides an MWW type zeolite in which the ratio (B/A) of the peak intensity (B) attributable to tetracoordinate aluminum relative to the peak intensity (A) attributable to hexacoordinate aluminum is 2 or more in 27Al MAS NMR, when measured as an ammonium type. The present invention also provides a method for producing an MWW type zeolite, the method having a step for carrying out a hydrothermal synthesis reaction in the presence of: a seed crystal of an MWW type zeolite containing no organic structure-directing agent; and a reaction mixture containing a silica source, an alumina source, an alkali source, an organic structure-directing agent, and water. The reaction mixture satisfies the following molar ratio: X/SiO2<0.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 1, 2022
    Assignees: Mitsui Mining & Smelting Co., Ltd., NATIONAL UNIVERSITY CORPORATION TOTTORI UNIVERSITY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Yoshihiro Kamimura, Akira Endou, Yasuo Yamazaki, Naonobu Katada, Satoshi Suganuma, Yoshihiro Kubota, Satoshi Inagaki
  • Publication number: 20220333257
    Abstract: An organic hydride production apparatus includes: an electrolyte membrane having proton conductivity; a cathode, provided on one side of the electrolyte membrane, that contains a cathode catalyst used to hydrogenate a hydrogenation target substance using protons to produce an organic hydride; an anode, provided opposite to the one side of the electrolyte membrane, that contains an anode catalyst used to oxidize water to produce protons; and an anode support, provided opposite to the electrolyte membrane side of the anode, that supports the anode. The anode support is formed of an elastic porous body of which the Young's modulus is greater than 0.1 N/mm2 and less than 43 N/mm2.
    Type: Application
    Filed: July 6, 2022
    Publication date: October 20, 2022
    Applicants: National University Corporation YOKOHAMA National University, DE NORA PERMELEC LTD
    Inventors: Shigenori MITSUSHIMA, Kensaku NAGASAWA, Yoshinori NISHIKI, Setsuro OGATA, Akihiro KATO, Awaludin ZAENAL, Koji MATSUOKA, Yasushi SATO
  • Patent number: 11466343
    Abstract: A metal porous body having a three-dimensional network structure, includes: a framework forming the three-dimensional network structure; and a coating layer having fine pores and coating the framework, the three-dimensional network structure including a rib and a node connecting a plurality of ribs, the framework including an alkali-resistant first metal, the fine pores having an average fine pore diameter of 10 nm or more and 1 ?m or less, the coating layer including an alkali-resistant second metal and optionally including an alkali-soluble metal, the alkali-soluble metal being contained at a proportion of 0% by mass or more and 30% by mass or less with reference to a total mass of the framework and the coating layer.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 11, 2022
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
    Inventors: Kazuki Okuno, Takahiro Higashino, Hiromasa Tawarayama, Masatoshi Majima, Haruki Masumura, Yoshiyuki Kuroda, Shigenori Mitsushima
  • Patent number: 11448729
    Abstract: In a light deflection device and a lidar device, a parallel operation can be realized with a simple constitution, so as to avoid enlargement or complication of a system. The reflection angle of the light deflection device depends on a wavelength and a refractive index, so that light beams with respective wavelengths different from each other are simultaneously and parallelly deflected in directions of deflection angles each defined by the wavelength and the refractive index. The light beams with the plural wavelengths different from each other are deflected at the different deflection angles each defined by each wavelength and the refractive index, so that they can be deflected simultaneously and parallelly. The plural deflected light beams can be distinguished from each other based on the difference in the wavelength and the deflection angle of the light, even in the simultaneous and parallel operation.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 20, 2022
    Assignees: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Toshihiko Baba, Nobuhiko Nishiyama