Patents Assigned to Tokyo Metropolitan University
  • Patent number: 11931726
    Abstract: The invention provides a gold-supporting catalyst comprising gold nanoparticles and a carrier consisting of porous ceramic obtained by firing a mixture comprising an aluminum compound, a lime component, and a plastic clay containing 1% by mass or less of feldspars and quartz, wherein the gold nanoparticles are supported in an amount of 0.01 to 10 parts by mass on the carrier based on 100 parts by mass of the carrier.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: March 19, 2024
    Assignees: TOKYO METROPOLITAN UNIVERSITY, FUJI CHEMICAL INDUSTRIES, LTD.
    Inventors: Toru Murayama, Masatake Haruta, Takashi Takei, Qianqian Zhu, Yasunori Inoue, Fumio Uchida, Kenji Maeda, Hiroshi Matsuo, Yasuo Shibasaki
  • Patent number: 11543366
    Abstract: An information acquisition method includes: executing a voxel defining process to divide an area in which a signal source is assumed to be present and define a voxel division V1 specifying resolution of an image; executing a data collecting process to acquire magnetic field data resulting from measurement of a magnetic field generated in the area; and executing a reconstructing process to estimate, by using a mathematical algorithm, a direction and strength of a current of a signal source at a location of each voxel based on the acquired magnetic field data. The reconstructing process includes: calculating a Gram matrix by using a voxel division V2 defined coarser than the voxel division V1; and reconstructing, by using the Gram matrix, a direction and strength of a current of a signal source in the voxel division V1.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: January 3, 2023
    Assignees: Ricoh Company, Ltd., Tokyo Metropolitan University
    Inventors: Taishi Watanabe, Kensuke Sekihara
  • Patent number: 11139534
    Abstract: Provided is a lithium secondary battery separator including a laminate of a substrate and a porous heat-resistant polyimide film which covers at least one surface of the substrate. The porous heat-resistant polyimide film has pores which are regularly arrayed three-dimensionally and a film thickness of 5-20 ?m. Penetration damage to the separator by growth of dendrite-shaped lithium is avoided, and it is also possible to meet a request which is demanded of the lithium secondary battery separator.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: October 5, 2021
    Assignees: TOKYO METROPOLITAN UNIVERSITY, 3DOM INC.
    Inventors: Kiyoshi Kanamura, Hirokazu Munakata, Yongcheng Jin
  • Patent number: 11107936
    Abstract: An output voltage control circuit device includes a rectifying unit configured to permit a flow of a current from a negative electrode side to a positive electrode side of a power supply cell, a voltage generation unit, through which a current is able to flow in both directions between both ends inserted between a negative electrode of an odd-numbered power supply cell counted from the negative electrode side of the power supply cells and an anode of the rectifying unit, and a generated voltage between both ends is able to be cyclically inverted; a voltage holding capacitor, and a voltage control circuit unit configured to generate a voltage, a direction of which is cyclically inverted, between both ends of the voltage generation unit on the negative electrode side of the power supply cells.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 31, 2021
    Assignees: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Kazuki Obata, Toshihisa Shimizu
  • Publication number: 20210252485
    Abstract: The invention provides a gold-supporting catalyst comprising gold nanoparticles and a carrier consisting of porous ceramic obtained by firing a mixture comprising an aluminum compound, a lime component, and a plastic clay containing 1% by mass or less of feldspars and quartz, wherein the gold nanoparticles are supported in an amount of 0.01 to 10 parts by mass on the carrier based on 100 parts by mass of the carrier.
    Type: Application
    Filed: September 6, 2019
    Publication date: August 19, 2021
    Applicants: TOKYO METROPOLITAN UNIVERSITY, FUJI CHEMICAL CO., LTD.
    Inventors: Toru Murayama, Masatake Haruta, Takashi Takei, Qianqian Zhu, Yasunori Inoue, Fumio Uchida, Kenji Maeda, Hiroshi Matsuo, Yasuo Shibasaki
  • Patent number: 11052355
    Abstract: A gas separation membrane containing a matrix resin and hyperbranched polymer- or dendrimer-bound, heteromorphous shaped silica nanoparticles, which are formed of heteromorphous shaped silica nanoparticles having surfaces onto which a hyperbranched polymer or a dendrimer is chemically added.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: July 6, 2021
    Assignees: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITY
    Inventors: Hiroyoshi Kawakami, Manabu Tanaka, Yuri Kameyama, Yuki Kudo, Hiroto Mikami, Tadayuki Isaji, Kazutoshi Odaka, Takamasa Kikuchi
  • Publication number: 20210151788
    Abstract: To provide: an electrolyte film having a practical film thickness, an excellent mechanical strength, and electrochemical characteristics; an electrolyte composition making it possible to obtain the electrolyte film; and a cell in which the electrolyte film is used. [Solution] An electrolyte composition characterized in comprising an electrolyte powder, a binder, and an ion-conductive material; the electrolyte powder being an oxide-based ceramic electrolyte powder; the binder being a polymer compound that is stable with respect to metal ions; the ion-conductive material being a solvated ion-conductive material or an ion-conductive solution having a metal ion-based compound. An electrolyte film characterized in being provided with an electrolyte powder and a composite material in which a binder and an ion-conductive material are made into a composite.
    Type: Application
    Filed: July 24, 2018
    Publication date: May 20, 2021
    Applicants: TOKYO METROPOLITAN UNIVERSITY, 3DOM INC.
    Inventors: Kiyoshi Kanamura, Hirokazu Munakata, Takeshi Kimura
  • Patent number: 10930911
    Abstract: Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: February 23, 2021
    Assignees: TOKYO OHKA KOGYO CO., LTD., TOKYO METROPOLITAN UNIVERSITY, 3DOM INC
    Inventors: Hiroyoshi Sago, Kiyoshi Kanamura, Hirokazu Munakata, Kazuhiro Imazawa
  • Patent number: 10906009
    Abstract: A method for producing a gas separation membrane, including the following steps: step (a): treating the surfaces of silica nanoparticles dispersed in a first solvent with a reactive functional group-containing compound, while nanoparticles are being dispersed in the solvent, to thereby prepare a first solvent dispersion of reactive functional group-modified silica nanoparticles; step (b): replacing the first solvent dispersion's dispersion medium of reactive functional group-modified silica nanoparticles prepared in step (a) with a second solvent without drying of dispersion medium, and then reacting functional group-modified silica nanoparticles with dendrimer-forming monomer or hyperbranched polymer-forming monomer in the second solvent's presence so that dendrimer or hyperbranched polymer is added to reactive functional group, to thereby prepare dendrimer- or hyperbranched polymer-bound silica nanoparticles; step (c): mixing dendrimer- or hyperbranched polymer-bound silica nanoparticles prepared in step (b
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: February 2, 2021
    Assignees: NISSAN CHEMICAL CORPORATION, TOKYO METROPOLITAN UNIVERSITY
    Inventors: Hiroyoshi Kawakami, Manabu Tanaka, Yuri Kameyama, Azusa Osawa, Tadayuki Isaji, Takamasa Kikuchi
  • Patent number: 10865684
    Abstract: A combustion system operated at low cost is provided. A combustion system 1 includes a combustion device 10 that burns fuel, an exhaust line L1 through which exhaust gas flows, the exhaust gas being generated through combustion of the fuel in the combustion device 10, an air preheater 30 that is disposed in the exhaust line L1 and that recovers heat from the exhaust gas, and a denitration device 40 that is disposed in the exhaust line L1 and that removes nitrogen oxide from the exhaust gas using a denitration catalyst. The denitration device 40 is disposed downstream from the air preheater 30 in the exhaust line L1, and the denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: December 15, 2020
    Assignees: THE CHUGOKU ELECTRIC POWER CO., INC., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10862160
    Abstract: (Problem to be Solved) The present application is to provide an all-solid-state lithium-sulfur battery that experiences little reduction in battery performance even after repeated charging/discharging cycling, does not generate toxic gas when damaged, and does not require addition of equipment or the like for management of moisture or oxygen concentration; and a production method for the all-solid-state lithium-sulfur battery. (Means for Solution) The present invention uses a positive electrode that contains sulfur and a conductive material, a negative electrode that contains lithium metal, and, as an electrolyte layer that is interposed between the positive electrode and the negative electrode, an oxide solid electrolyte to achieve a high-performance all-solid-state lithium-sulfur battery.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: December 8, 2020
    Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITY
    Inventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
  • Publication number: 20200321482
    Abstract: An output voltage control circuit device includes a rectifying unit configured to permit a flow of a current from a negative electrode side to a positive electrode side of a power supply cell, a voltage generation unit, through which a current is able to flow in both directions between both ends inserted between a negative electrode of an odd-numbered power supply cell counted from the negative electrode side of the power supply cells and an anode of the rectifying unit, and a generated voltage between both ends is able to be cyclically inverted; a voltage holding capacitor, and a voltage control circuit unit configured to generate a voltage, a direction of which is cyclically inverted, between both ends of the voltage generation unit on the negative electrode side of the power supply cells.
    Type: Application
    Filed: March 19, 2020
    Publication date: October 8, 2020
    Applicants: Toyota Jidosha Kabushiki Kaisha, Tokyo Metropolitan University
    Inventors: Shinichi Urabe, Kazuki Obata, Toshihisa Shimizu
  • Publication number: 20200300783
    Abstract: An information acquisition method includes: executing a voxel defining process to divide an area in which a signal source is assumed to be present and define a voxel division V1 specifying resolution of an image; executing a data collecting process to acquire magnetic field data resulting from measurement of a magnetic field generated in the area; and executing a reconstructing process to estimate, by using a mathematical algorithm, a direction and strength of a current of a signal source at a location of each voxel based on the acquired magnetic field data. The reconstructing process includes: calculating a Gram matrix by using a voxel division V2 defined coarser than the voxel division V1; and reconstructing, by using the Gram matrix, a direction and strength of a current of a signal source in the voxel division V1.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 24, 2020
    Applicants: Ricoh Company, Ltd., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Taishi WATANABE, Kensuke SEKIHARA
  • Patent number: 10767535
    Abstract: There is provided a method for recycling a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A method for recycling a denitration catalyst includes a step of spraying an aqueous solution with a pH of 7 or more onto a used denitration catalyst while the denitration catalyst is set in a denitration device to remove a surface of the denitration catalyst. The denitration catalyst contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more. The denitration catalyst after recycling is used for denitration at 200° C. or lower.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: September 8, 2020
    Assignees: THE CHUGOKU ELECTRIC POWER CO., INC., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Toshikazu Yoshikawa, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10746073
    Abstract: There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst is obtained by coating a substrate with a catalyst component. The catalyst component contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more. The denitration catalyst is used for denitration at 200° C. or lower.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 18, 2020
    Assignees: THE CHUGOKU ELECTRIC POWER CO., INC., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10746074
    Abstract: There is provided a method for recycling a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A method for recycling a denitration catalyst includes a step of removing a used denitration catalyst from a denitration device and then coating the used denitration catalyst with a catalyst component. The catalyst component contains 43 wt % or more of vanadium pentoxide and has a BET specific surface area of 30 m2/g or more, and the denitration catalyst after recycling is used for denitration at 200° C. or lower.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: August 18, 2020
    Assignees: THE CHUGOKU ELECTRIC POWER CO., INC., TOKYO METROPOLITAN UNIVERSITY
    Inventors: Eiji Kiyonaga, Kenji Hikino, Keiichiro Morita, Toshikazu Yoshikawa, Masatake Haruta, Toru Murayama, Makoto Mino
  • Patent number: 10720745
    Abstract: The present invention provides an atomic oscillator comprising: a first frequency synthesizer for multiplying a reference frequency signal oscillated with a first voltage control oscillator by a first multiplication ratio and synthesizing a first high frequency signal; a first semiconductor laser for emitting a first laser light modulated by the first high frequency signal; a second frequency synthesizer for multiplying an output signal oscillated by a second voltage control oscillator with a second multiplication ratio and synthesizing a second high frequency signal; a second semiconductor laser for emitting a second laser modulated by the second high frequency signal; a gas cell being emitted with the first laser light and the second laser light simultaneously, the gas cell enclosing a first alkali-metal atom gas, a second alkali-metal atom gas, and buffer gas; and a computer for setting the first multiplication ratio in the first frequency synthesizer.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: July 21, 2020
    Assignee: Tokyo Metropolitan University
    Inventor: Shigeyoshi Goka
  • Publication number: 20200206950
    Abstract: A finger mechanism for a robot, an artificial hand, and the like, wherein a fourth bone member (14) of the bone members of the finger mechanism and corresponding to the distal phalanx comprises: a support portion (15) that is rotatably coupled to a third bone member corresponding to the middle phalanx by a rotational shaft (g5); and a nail portion (16). The nail portion (16) can freely rotate about a shaft (g7) at a right angle or a near right angle to the rotational shaft (g5), and a return mechanism (17) to return the rotated nail portion (16) to a reference position is provided between the support portion (15) and the nail portion (16). In this manner, in response to the amount of force applied to the fourth bone member (14), it is possible for only the nail portion (16) to rotate in a direction to easily grasp an object to be held.
    Type: Application
    Filed: March 20, 2018
    Publication date: July 2, 2020
    Applicant: TOKYO METROPOLITAN UNIVERSITY
    Inventor: Naoki Fukaya
  • Patent number: 10686186
    Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 16, 2020
    Assignees: TOKYO ELECTRIC POWER COMPANY HOLDINGS, INCORPORATED, TOKYO METROPOLITAN UNIVERSITY
    Inventors: Hideo Michibata, Kiyoshi Kanamura, Mao Shoji
  • Patent number: 10643032
    Abstract: An output sentence generation apparatus for automatically generating one output sentence from a plurality of input keywords includes a candidate sentence generator incorporating a learned neural network configured to take in the plurality of keywords and generate a plurality of candidate sentences each including at least some of the plurality of keywords, and an evaluation outputter configured to calculate an overlap ratio for each of the plurality of candidate sentences generated by the candidate sentence generator and increase an evaluation of the candidate sentence with a small overlap ratio to thereby determine an output sentence from the plurality of candidate sentences. The overlap ratio is the number of occurrences of an overlapping word with respect to the number of occurrences of all words included in the corresponding candidate sentence.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: May 5, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Tokyo Metropolitan University
    Inventors: Mamoru Komachi, Shin Kanouchi, Tomoya Ogata, Tomoya Takatani