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).

  • Publication number: 20200388834
    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: Application
    Filed: May 26, 2020
    Publication date: December 10, 2020
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION OKAYAMA UNIVERSITY
    Inventors: Daisuke HORIKAWA, Yuji YAMAMOTO, Takashi TERANISHI
  • Publication number: 20200343798
    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: Application
    Filed: April 22, 2020
    Publication date: October 29, 2020
    Applicants: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION, Toshiba Industrial Products and Systems Corporation
    Inventors: Katsutoku Takeuchi, Makoto Matsushita, Yuji Yamamoto, Masaaki Matsumoto
  • Patent number: 10808050
    Abstract: An antibody-drug conjugate having a cyclic benzylidene acetal linker represented by formula (1) or formula (2), wherein Y is an antibody; D is a drug; 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; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 20; and Z1 and Z2 are each independently a selected divalent spacer:
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: October 20, 2020
    Assignee: NOF CORPORATION
    Inventors: Takuma Tsubusaki, Yuji Yamamoto
  • Publication number: 20200324383
    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: Application
    Filed: March 23, 2020
    Publication date: October 15, 2020
    Inventors: YUJI YAMAMOTO, TORU FURUSHIGE
  • Publication number: 20200289656
    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: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: NOF CORPORATION
    Inventors: Takuma TSUBUSAKI, Yuji Yamamoto
  • Publication number: 20200291178
    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: Application
    Filed: May 29, 2020
    Publication date: September 17, 2020
    Applicant: NOF CORPORATION
    Inventors: Takuma TSUBUSAKI, Yuji YAMAMOTO
  • Publication number: 20200290264
    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: Application
    Filed: February 17, 2020
    Publication date: September 17, 2020
    Inventors: JUNICHI KAMATANI, YUJI YAMAMOTO, NOBUYUKI KAMIKIHARA
  • Publication number: 20200259208
    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: Application
    Filed: January 21, 2020
    Publication date: August 13, 2020
    Inventor: Yuji YAMAMOTO
  • Patent number: 10714725
    Abstract: Provided is a separator that is used in a nonaqueous electrolyte secondary battery, and that exhibits high impregnation ability with respect to a nonaqueous electrolyte solution. The separator for a nonaqueous electrolyte secondary battery disclosed herein is provided with: a porous substrate; a first coat layer formed on a pair of main surfaces and on an inner surface of the porous substrate; and a second coat layer formed on the first coat layer, at least on one main surface of the porous substrate. The first coat layer has higher hydrophilicity than the porous substrate. The second coat layer has higher hydrophobicity than the porous substrate. The hydrophilicity of an inner surface of the separator for a nonaqueous electrolyte secondary battery is higher than the hydrophilicity of the second coat layer, in a central region of the separator for a nonaqueous electrolyte secondary battery in the thickness direction thereof.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: July 14, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Yamamoto, Ryuta Sugiura
  • Patent number: 10680279
    Abstract: The present invention provides an art that can improve further battery performance of lithium ion secondary batteries in which a lithium salt is added to the interior of the batteries. A herein disclosed lithium ion secondary battery electrode is constituted by disposing, on a surface of a foil-like electrode current collector, an electrode mixture layer that contains a particulate electrode active material. With this electrode, a lithium salt having a lithium ion intake capability is added to the electrode mixture layer; dividing the electrode mixture layer into three equal regions, which are a first region, a second region, and a third region, in a thickness direction, an amount of the lithium salt component in the first region and an amount of the lithium salt component in the third region satisfy the relationship 0<S3/S1?4; and a maximum particle diameter of aggregates of the lithium salt present in the electrode mixture layer is less than 1 ?m.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: June 9, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Yamamoto, Ryuta Sugiura
  • Patent number: 10633489
    Abstract: A hydrophilic polymer derivative having a benzylidene acetal linker whose hydrolysis rate at the pH of a weakly acidic environment in the living body can be accurately controlled. A hydrophilic polymer derivative having a benzylidene acetal linker, which is represented by the following formula (1): wherein R1 is a hydrogen atom or a hydrocarbon group; R2, R3, R4, R5, and R6 are each independently a hydrogen atom or a substituent and at least one of R3, R4, and R5 is an electron-withdrawing substituent or at least one of R2 and R6 represents a substituent; X1 is a chemically reactive functional group; P is a hydrophilic polymer; w is an integer of 1 to 8; and Z1 and Z2 are an independently selected divalent spacer.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: April 28, 2020
    Assignee: NOF CORPORATION
    Inventors: Takuma Tsubusaki, Yuji Yamamoto
  • Patent number: 10637310
    Abstract: A synchronous reluctance type rotary electric machine of an embodiment has a rotor core. The rotor core includes a plurality of poles, multi-layered hollow parts having a convex shape toward a side radially inward formed for each pole in cross section, and a bridge formed between each of the hollow parts and an outer circumferential surface thereof. When a boundary between two adjacent poles is a pole boundary, a groove is formed on at least one of both sides sandwiching the pole boundary at positions other than on the pole boundary on the outer circumferential surface of the rotor core.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: April 28, 2020
    Assignees: Toshiba Industrial Products and Systems Corporation, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Masaaki Matsumoto, Takashi Araki, Yuji Yamamoto, Katsutoku Takeuchi, Makoto Matsushita, Toshio Hasebe
  • Patent number: 10626217
    Abstract: A lipid derivative in which a hydrophilic polymer is bound through a cyclic benzylidene acetal linker, and which can accurately control a hydrolysis rate in the weakly acidic environment of a living body to detach the hydrophilic polymer from a lipid membrane structure. The lipid derivative is represented by 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; R7 is a hydrocarbon group having from 8 to 24 carbon atoms, an acyl group having from 8 to 24 carbon atoms, a cholesterol derivative, a glycerolipid, a phospholipid or a sphingolipid; P is a hydrophilic polymer; s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; and Z1 and Z2 are each independently a selected divalent spacer.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 21, 2020
    Assignee: NOF CORPORATION
    Inventors: Masaki Ota, Takuma Tsubusaki, Yuji Yamamoto
  • Publication number: 20200112029
    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: Application
    Filed: September 27, 2019
    Publication date: April 9, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Publication number: 20200079903
    Abstract: A method of producing a polyoxyethylene derivative (1): where L1 is a divalent linker, X is a functional group capable of reacting with a physiologically active substance, a is 1 or 2, and n is from 11 to 3,650. The method includes Step (A): protecting 4 or 6 hydroxyl groups in a polyhydric alcohol having 5 or 7 hydroxyl groups by cyclic benzylidene acetalization to obtain a compound having a hydroxyl group at a 1-position and a protective group of a cyclic benzylidene acetal structure; Step (B): polymerizing from 11 to 3,650 moles of ethylene oxide to the compound obtained in the step (A) to obtain a polyoxyethylene derivative; Step (C): converting the hydroxyl group at a terminal of the polyoxyethylene derivative to a functional group capable of reacting with a physiologically active substance; and Step (D): deprotecting the protective group of the polyoxyethylene derivative.
    Type: Application
    Filed: March 22, 2018
    Publication date: March 12, 2020
    Applicant: NOF CORPORATION
    Inventors: Hiroki YOSHIOKA, Yuji YAMAMOTO
  • Patent number: 10578775
    Abstract: A film structural member includes a recessed portion on a transparent substrate, metal wiring on a base of the recessed portion, and a particle layer on the metal wiring. The particle layer is configured as an aggregate of particles having an average particle diameter of 300 nm or smaller.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: March 3, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Keitaro Fujii, Teppei Iwase, Yuji Yamamoto, Nobuyuki Kamikihara
  • Publication number: 20200052288
    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: Application
    Filed: July 30, 2019
    Publication date: February 13, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Patent number: 10536614
    Abstract: A technique in multi-light control capable of notifying an image pickup apparatus of charge completion information items of a plurality of lighting devices. A lighting device is wirelessly communicably connected to other lighting devices, and is communicably attached to an image pickup apparatus so as to be driven in synchronism with the other lighting devices. First charge completion information of the lighting device itself and second charge completion information of the other lighting devices are transmitted to the image pickup apparatus either in a combined state or in a separate state. If it is determined that an instruction for transmitting the first charge completion information and the slave charge completion information in the separate state has been received from the image pickup apparatus, the first charge completion information and the slave charge completion information are transmitted to the image pickup apparatus in the separate.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: January 14, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yuji Yamamoto
  • Patent number: 10526457
    Abstract: Provided herein are narrowly distributed multi-armed polyethylene glycol compounds, and hydrogels containing the same. Also provided are methods for treating, adhering, or sealing a biological tissue with hydrogels, and kits for making a hydrogel. Drug releasing compositions also are provided that include a narrowly distributed multi-armed polyethylene glycol compound.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 7, 2020
    Assignees: NOF Corporation, Massachusetts Institute of Technology
    Inventors: Elazer Edelman, Natalie Artzi, Hyun Seok Song, Yuji Yamamoto, Hiroki Yoshioka, Ken-ichiro Nakamoto
  • Patent number: 10505406
    Abstract: According to one embodiment, an electrical machine includes a rotor and an armature. The armature includes first to third stator cores, and an armature coil. The first and second stator cores are arranged along a direction of a rotation axis of the rotor. The third stator core is arranged opposite to the first and second stator cores. The armature coil is provided between the first and second stator cores. The first and second stator cores have a same shape and each include magnetic poles and a first positioning part. The third stator core includes a second positioning part. A relative phase angle of the first stator core and a relative phase angle of the second stator core in the rotation direction are set by using the first positioning part and the second positioning part.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: December 10, 2019
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Industrial Products and Systems Corporation
    Inventors: Hiroshi Takahashi, Yasuhito Ueda, Takahiro Kokubo, Toyonobu Yamada, Yoshiro Shinoda, Hisaaki Shimozu, Yuji Yamamoto