Patents by Inventor Yuji Yamamoto

Yuji Yamamoto 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).

  • Patent number: 11664492
    Abstract: An electrode using a carbon nanotube as a conductive material, and excellent in resistance characteristics is provided. An electrode for a secondary battery herein disclosed has a collector, and an active material layer formed on the collector. The active material layer includes an active material and a carbon nanotube. At least a part of the surface of the carbon nanotube is coated with a material including an element with a lower electronegativity than that of carbon.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: May 30, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Publication number: 20230115237
    Abstract: Provided is a novel method of producing nickel sulfate from nickel oxide. The method of producing nickel sulfate herein disclosed includes a step of feeding nickel oxide particles and an acid aqueous solution into a pressure resistant container, a step of heating the pressure resistant container in a sealed state to a temperature exceeding 100° C. to obtain a mixed liquid in which nickel oxide is dissolved, and a step of forming nickel sulfate, using the mixed liquid.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 13, 2023
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventors: Yuji YAMAMOTO, Takeru MORIYAMA, Tomoaki NAKATANI
  • Patent number: 11626586
    Abstract: Provided is a positive electrode material which can impart a lithium secondary battery with excellent low temperature output characteristics, excellent high temperature cycle characteristics and excellent durability against high voltage. A positive electrode material of a lithium secondary battery disclosed here includes a positive electrode active substance particle, a Li-free first coating at the surface of the positive electrode active substance particle, and a Li-containing second coating at the surface of the positive electrode active substance particle. The first coating contains a titanium oxide represented by TiO2 or TinO2n-1, wherein n is an integer of 3 or more. The second coating contains a composite oxide containing Li and Ti, wherein the ratio of the number of atoms of Li relative to the number of atoms of Ti is at least 0.1 and at most 3.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: April 11, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Daisuke Horikawa, Yuji Yamamoto, Takashi Teranishi
  • Patent number: 11621413
    Abstract: A positive electrode material which is used in a positive electrode of a lithium ion secondary battery disclosed here includes a positive electrode active material including a compound capable of storing and releasing lithium ions, a first coating material disposed on at least a part of the surface of the positive electrode active material, and a second coating material disposed on at least a part of the surface of the positive electrode active material. The positive electrode material is characterized in that the first coating material contains a nickel oxide having a rock salt structure, and the second coating material contains a titanium oxide.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 4, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Daisuke Horikawa, Yuji Yamamoto, Takashi Teranishi
  • Publication number: 20230102390
    Abstract: This non-aqueous electrolyte may include: a compound represented by Chemical Formula (1). wherein a repeating number n of a unit structure may be an integer in a range of 1 to 7, inclusive.
    Type: Application
    Filed: September 6, 2022
    Publication date: March 30, 2023
    Applicant: TDK Corporation
    Inventors: Kazuki MATSUSHITA, Yuji YAMAMOTO, Takashi MORI
  • Patent number: 11541503
    Abstract: A polishing apparatus is a polishing apparatus polishing a target object formed on a surface of a film-shaped substrate. A polishing apparatus includes: a rotatable polishing tool acting on the target object; a slurry nozzle supplying a polishing slurry; and a polishing stage pressing the polishing tool against the target object. A surface of the polishing stage has an unevenness shape.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: January 3, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuji Yamamoto, Toru Furushige
  • Patent number: 11530295
    Abstract: A hydrophilic polymer derivative having a cyclic benzylidene acetal linker represented by the following formula (1): wherein R1 and R6 are each independently a hydrogen atom or a hydrocarbon group; R2, R3, R4 and R5 are each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; X1 is a chemically reactive functional group; P is a hydrophilic polymer; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 8; and Z1 and Z2 are each independently a selected divalent spacer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: December 20, 2022
    Assignee: NOF CORPORATION
    Inventors: Takuma Tsubusaki, Yuji Yamamoto
  • Patent number: 11529423
    Abstract: A biodegradable polyethylene glycol derivative in which a polyethylene glycol chain is linked by an acetal linker capable of accurately controlling the hydrolysis rate under different pH environments in the living body, and whose division rate into a polyethylene glycol chain of low molecular weight in the living body can be accurately controlled. The biodegradable polyethylene glycol derivative is represented by formula (1) or formula (2) as described.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: December 20, 2022
    Assignee: NOF CORPORATION
    Inventors: Takuma Tsubusaki, Yuji Yamamoto
  • Patent number: 11518081
    Abstract: A method for manufacturing a film structure includes: a positional deviation amount detection process of detecting an amount of positional deviation related to a relative position of a second cured film formed on a rear surface of a film with respect to a first cured film formed on a front surface of the film; a relative position adjustment process of correcting a position or a rotation speed of a second transfer roll to adjust the relative position such that the amount of positional deviation detected in the positional deviation amount detection process is reduced; a first tensile force detection process and a second tensile force detection process of respectively detecting a tensile force of the film between a first pressurizing roll and a second pressurizing roll before and after the relative position adjustment process; and a tensile force adjustment process of adjusting the tensile force of the film such that the tensile force of the film detected in the second tensile force detection process approaches
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: December 6, 2022
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi Kamatani, Yuji Yamamoto, Nobuyuki Kamikihara
  • Patent number: 11515527
    Abstract: A positive electrode imparts secondary battery with low temperature output characteristics, high temperature cycle characteristics and durability against high voltage. A positive electrode of secondary battery includes positive electrode current collector and positive electrode active substance layer on positive electrode current collector. The positive electrode active substance layer contains positive electrode active substance particles and oxide particles which are dispersed in positive electrode active substance layer as separate particles from positive electrode active substance particles. The positive electrode active substance particles each include coating of titanium-containing compound at the surface. The titanium-containing compound in coating is at least one compound selected from group consisting of TiO2, TinO2n?1, wherein n is integer of 3 or more, and oxides containing Li and Ti.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: November 29, 2022
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Daisuke Horikawa, Yuji Yamamoto, Takashi Teranishi
  • Publication number: 20220311004
    Abstract: The negative electrode for a lithium ion secondary battery includes: a current collector; and a negative electrode active material layer which is in contact with at least one surface of the current collector, the negative electrode active material layer has a negative electrode active material and a binder, the negative electrode active material contains a material that can be alloyed with Li, the binder contains a predetermined copolymer, and a specific surface area of a surface of the negative electrode active material layer on a side opposite to the current collector side is 7.0 m2/g or more and 16.0 m2/g or less.
    Type: Application
    Filed: March 21, 2022
    Publication date: September 29, 2022
    Applicant: TDK CORPORATION
    Inventors: Hiroshi SASAGAWA, Yuji YAMAMOTO, Kazuki MATSUSHITA, Takashi MORI
  • Publication number: 20220271286
    Abstract: Provided is a chlorine-containing positive electrode active material that can impart excellent high-temperature storage characteristic to a lithium ion secondary battery. The positive electrode active material disclosed herein includes 0.1% by mass or more and 3% by mass or less of Cl. Further, in the positive electrode active material disclosed herein, the ratio of a peak intensity of a (003) plane to a peak intensity of a (104) plane in Miller indexes hlk that is determined by powder X-ray diffraction is 0.8 or more and 1.5 or less.
    Type: Application
    Filed: February 15, 2022
    Publication date: August 25, 2022
    Applicant: PRIME PLANET ENERGY & SOLUTIONS, INC.
    Inventor: Yuji YAMAMOTO
  • Publication number: 20220243986
    Abstract: A heater core assembly (10) comprising: a core (12) comprising a plurality of micro-tubes (13A, 13B), the plurality of micro-tubes (13A, 13B) being stacked in horizontal rows (15) between at least two headers (18) by inserting ends of each of the micro-tubes (13A,13B) into slots (42A, 42B) provided in the headers (18); a partition plate (30) disposed vertically in each of header (18) to define two vertical chambers (18A, 18B); wherein each of the horizontal rows (15) include at least one first micro-tube (13A) inserted in the first chamber (18A) and at least second micro-tube (13B) inserted in the second chamber (18B) to enable flow of the coolant in the core assembly (10).
    Type: Application
    Filed: July 18, 2019
    Publication date: August 4, 2022
    Inventors: Yuji YAMAMOTO, Sanjay CHAWLA, Hemanshu .,, Kavit BANSAL, Rohan Himanshu SHAH, Nipun VASHISHTH, Abhay KUMAR, Vijayaraghavan S., Dakshinamurthy GOVINDARAJ, K. SRINIVAS
  • Patent number: 11404716
    Abstract: The art disclosed herein provides a lithium ion secondary cell in which the internal resistance of the secondary cell is further reduced. A lithium ion secondary cell includes electrodes including an active material. The active material includes, on the surface, two coating layers of a metal oxide layer including a metal oxide and an ion conductive layer including a lithium ion conductor. The metal oxide layer and the ion conductive layer are adjacent to each other.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: August 2, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Patent number: 11331703
    Abstract: A piercer plug with increased life and a method of manufacturing it are provided. The piercer plug 1 includes a tip portion 2 and a trunk portion 3 made of the same material as the tip portion 2 and continuous to the tip portion 2. The trunk portion 3 includes a cylindrical portion 5 having a hole used for attaching a bar. The tip portion 2 is harder than the cylindrical portion 5.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: May 17, 2022
    Assignee: Nippon Steel Corporation
    Inventors: Yasuyoshi Hidaka, Yasuto Higashida, Yuichi Yamanari, Yuji Yamamoto, Tatsuya Miyai
  • Patent number: 11329538
    Abstract: According to one embodiment, in a lateral cross section, a rotor core includes a plurality of layers of barrier regions formed to be arranged in a radial direction with intervals in each magnetic pole. Each barrier region includes a flux barrier extending from near a part of an outer circumferential surface through d axis to near another part thereof. At least a flux barrier of a barrier region provided at an outermost circumferential surface side is filled with a nonmagnetic conductive material. A barrier-side edge on a side of the central axis, which defines the flux barrier of the barrier region provided in an outermost circumferential surface side is located within a range of 0.55<2a/R2 <0.84.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: May 10, 2022
    Assignees: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Toshiba Industrial Products and Systems Corporation
    Inventors: Katsutoku Takeuchi, Makoto Matsushita, Yuji Yamamoto, Masaaki Matsumoto
  • Publication number: 20220120506
    Abstract: A heat exchanger (100) having a plurality of plates (101) manufactured preferably but not limiting to the stamping process, the plates has been configured to accommodate the internal fins (106). The plates (101) also define plurality of the passages (102) for flowing at least two fluids. A plurality of conduits (103) fluidly coupled to a first end and second of the end of the plates (101) which allows the flow of the fluids. At least one inlet (104) coupled to a first end, and at least one outlet (105) coupled to the second end of the plurality of plates (101) configured to allow the flow of the fluids wherein each fluid flow in a different direction from the other, a plurality of inner fins (106) disposed on a surface of each of the plurality of plates (101) for increasing the surface to volume ratio of the first and second fluid to achieve pre-defined thermal performance.
    Type: Application
    Filed: March 19, 2019
    Publication date: April 21, 2022
    Inventors: Yuji YAMAMOTO, Sanjay Chawla, Hemanshu Yadav, Poonam Hyanki, Vijayaraghavan. S., Dakshinamurthy Govindaraj, K Srinivas
  • Publication number: 20220124880
    Abstract: The present disclosure provides a heating cooker with improved usability. A heating cooker comprising: a heating unit that heats a cooking object; a temperature detector that detects temperature information about the cooking object; a controller that controls the heating unit based on heating conditions including at least a heating temperature and a heating time, and the temperature information; and a communicator that communicates with an external device, wherein the external device receives input information from a user, wherein the communicator transmits the input information received from the external device to the controller, and wherein the controller creates, when the input information is predetermined input information, update information about at least the heating temperature among the heating conditions based on the predetermined input information.
    Type: Application
    Filed: July 16, 2020
    Publication date: April 21, 2022
    Inventors: Hirofumi KOMOTO, Kyohei YABUNO, Yuji YAMAMOTO, Masashi KINOSHITA
  • Patent number: 11276862
    Abstract: An electrode using a carbon nanotube as a conductive material and having a small resistance is provided. An electrode for a secondary battery disclosed herein has a collector, and an active material layer formed on the collector. The active material layer includes an active material and carbon nanotubes. Each of the carbon nanotube has a coating of a material including an element with a higher electronegativity than that of carbon on at least a part of the surface thereof.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: March 15, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Publication number: 20220059838
    Abstract: Provided is a positive electrode for a secondary battery in which carbon nanotubes are used, of which an initial resistance is small, and that suppresses an increase in resistance when charging and discharging are repeated. The positive electrode for a secondary battery disclosed herein includes a positive-electrode current collector and a positive-electrode active material layer provided on the positive-electrode current collector. The positive-electrode active material layer contains a positive-electrode active material and carbon nanotubes, and substantially does not contain a resin binder. The positive-electrode active material layer includes a layer-like region that is in contact with the positive-electrode current collector, and a region other than the layer-like region. Both of the layer-like region and the region other than the layer-like region contain carbon nanotubes.
    Type: Application
    Filed: August 12, 2021
    Publication date: February 24, 2022
    Inventor: Yuji YAMAMOTO