Patents by Inventor Hideaki Seki

Hideaki Seki 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: 11029689
    Abstract: A vehicle control system configured to maintain detection accuracy of an external sensor such as an on-board camera. The vehicle control system is applied to a vehicle that can be operated autonomously. A controller communicates with a database stored on the controller and a database stored on an external facility. The controller changes orientation of a headlamp toward an object detected by an on-board camera, in a case that the headlamp is turned on, and that information about the object detected by the on-board camera is not available in the database.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: June 8, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kensei Hata, Hiroaki Kodera, Takahito Endo, Naoki Harayama, Katsuya Iwazaki, Yushi Seki, Hideaki Komada
  • Patent number: 10985399
    Abstract: A negative electrode for a lithium ion secondary battery includes a current collector and an active material-containing layer disposed on the current collector. The active material-containing layer includes: a first negative electrode active material including a carbon material; a second negative electrode active material including a metal element or a metalloid element as a constituent element, the metal element or the metalloid element being capable of forming an alloy with lithium; and a binder. The first negative electrode active material contains a spherical graphite, and the binder contains an acrylic resin.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: April 20, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroshi Sasagawa, Yasuyuki Kawanaka, Hideaki Seki
  • Patent number: 10971717
    Abstract: A positive electrode active material includes: a lithium complex oxide expressed by chemical formula (1); a highly thermal conductive compound; and graphene or multilayer graphene. LixM1yM21-yO2??(1) In the formula (1), M1 is at least one metal selected from Ni, Co, and Mn, M2 is at least one metal selected from the group consisting of Al, Fe, Ti, Cr, Mg, Cu, Ga, Zn, Sn, B, V, Ca, and Sr, and x and y are numbers such that 0.05?x?1.2 and 0.3?y?1.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: April 6, 2021
    Assignee: TDK CORPORATION
    Inventors: Shin Fujita, Hideaki Seki
  • Patent number: 10944127
    Abstract: In this non-aqueous electrolyte secondary battery, a positive terminal and a negative terminal extend in a first direction, protrude from a laminated cell stack, and are provided so that a center line is interposed therebetween, the center line passing through a midpoint of both ends of the laminated cell stack in a second direction orthogonal to the first direction and extending in the first direction when the laminated cell stack is seen in plan view, and a first terminal with higher heat dissipation efficiency among the positive terminal and the negative terminal is provided in a location closer to the center line than a location of a second terminal with lower heat dissipation efficiency among the positive terminal and the negative terminal.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: March 9, 2021
    Assignee: TDK CORPORATION
    Inventors: Takashi Sasaki, Hideaki Seki, Hirofumi Kakuta, Akinobu Nojima, Shin Fujita
  • Publication number: 20210043885
    Abstract: A non-aqueous electrolyte secondary battery in which a potential of a metal layer in an exterior body is kept noble, and corrosion can be suppressed, including: a power generation element wherein a positive electrode and a negative electrode are opposed to each other with a separator interposed therebetween, and the negative electrode is disposed on an outer side than the positive electrode; and an exterior body which covers the power generation element, and has a metal layer and a resin layer which covers both surfaces of the metal layer, and an average thickness t1 of a first part of the exterior body which covers upper and lower surfaces of the power generation element in a lamination direction of the power generation element and an average thickness t2 of a second part of the exterior body which covers side surfaces of the power generation element satisfy a relationship of t2/t1<0.995.
    Type: Application
    Filed: March 22, 2019
    Publication date: February 11, 2021
    Applicant: TDK Corporation
    Inventors: Takamasa MINAMI, Kazuma AKIMOTO, Hideaki SEKI
  • Publication number: 20200358045
    Abstract: The nonaqueous electrolyte secondary battery includes a power generation element in which a positive electrode and a negative electrode exchange ions via an electrolyte, two terminals connected to the positive electrode and the negative electrode, respectively, and an exterior body which is formed by extending one terminal of each of the outer sides to cover the power generation element and the two terminals, and the outer circumference of which is sealed. A seal strength of the outer periphery of the exterior body is the weakest at a terminal sealing portion sandwiching the two terminals; and at least one surface of the terminal seal portion has a seal strength of 4.5 N/mm or less.
    Type: Application
    Filed: February 1, 2019
    Publication date: November 12, 2020
    Applicant: TDK CORPORATION
    Inventors: Takamasa MINAMI, Hideaki SEKI
  • Patent number: 10826110
    Abstract: A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)int/(201)int) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)int/(201)int) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35?(002)int/(201)int?0.53 and 0.46?(102)int/(201)int?0.63, respectively, LixVOPO4 . . . (1).
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: November 3, 2020
    Assignee: TDK CORPORATION
    Inventors: Junpei Shitaba, Hideaki Seki, Masahiro Tsuchiya
  • Patent number: 10794455
    Abstract: A tensioner includes a power spring, and a backup member being in contact with the power spring and supporting the power spring by acting an urging force in a direction opposite to a radial shift of the power spring in a direction in which the power spring is wound. The power spring is unwound in a condition in which an inter-plate frictional force of the power spring is small in a case where an urging force acting from a power spring to a tension member is greater than a load acting from the tensioner arm to the power spring and the power spring is wound in a condition in which the inter-plate frictional force of the power spring is large in a case where the urging force acting from the power spring to the tension member is smaller than the load acting from the tension member to the power spring.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: October 6, 2020
    Assignees: DAIDO KOGYO CO., LTD., NHK SPRING CO., LTD.
    Inventors: Hideaki Seki, Yoshio Yamada, Takao Kobayashi, Kazuhito Hiraoka, Shuji Takahashi
  • Publication number: 20200235350
    Abstract: A non-aqueous electrolytic liquid secondary battery wherein a potential of a metal layer in an exterior body is kept high, and corrosion can be suppressed, wherein an average thickness t1 of a first part of an exterior body covering a first side surface where a negative and a positive electrode terminal of a power generation element exist is different from an average thickness t2 of a second part of the exterior body covering a second side surface that intersects the first. In plan view of the power generation element from a lamination direction, in a second direction orthogonal to a first direction in which the electrode terminals extend, the relationship of t1<t2 is satisfied when a width of the negative electrode is larger than the positive, and in the second direction, the relationship of t1>t2 is satisfied when the width of the negative electrode is smaller than the positive.
    Type: Application
    Filed: March 22, 2019
    Publication date: July 23, 2020
    Applicant: TDK CORPORATION
    Inventors: Takamasa MINAMI, Kazuma AKIMOTO, Hideaki SEKI
  • Patent number: 10629896
    Abstract: A positive electrode includes: a positive electrode current collector; and a positive electrode active material layer disposed on the positive electrode current collector. The positive electrode active material layer contains a lithium-containing transition metal oxide represented by composition formula (1) indicated below, and a compound represented by LiVOPO4. The lithium-containing transition metal oxide and the compound represented by LiVOPO4 are dispersed in the positive electrode active material layer. LitNixCoyAlzO2??(1) where 0.9?t?1.1, 0.3<x<0.99, 0.01<y<0.4, 0.001<z<0.2, and x+y+z=1.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: April 21, 2020
    Assignee: TDK CORPORATION
    Inventors: Tetsu Syoji, Hideaki Seki, Hirofumi Kakuta, Shin Fujita
  • Publication number: 20190353227
    Abstract: A tensioner includes a power spring, and a backup member being in contact with the power spring and supporting the power spring by acting an urging force in a direction opposite to a radial shift of the power spring in a direction in which the power spring is wound. The power spring is unwound in a condition in which an inter-plate frictional force of the power spring is small in a case where an urging force acting from a power spring to a tension member is greater than a load acting from the tensioner arm to the power spring and the power spring is wound in a condition in which the inter-plate frictional force of the power spring is large in a case where the urging force acting from the power spring to the tension member is smaller than the load acting from the tension member to the power spring.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Inventors: Hideaki SEKI, Yoshio YAMADA, Takao KOBAYASHI, Kazuhito HIRAOKA, Shuji TAKAHASHI
  • Publication number: 20190277371
    Abstract: A resister clip (35) includes engage portions (35a) engaging with an engage groove, a spring portion (35b) and operating portions (35c). The spring portion (35b) can be designed with a high degree of freedom in terms of a coil number of turns, a winding diameter and others and the engage portions (35a) are widened centering on the spring portion (35b), so that diameter-widening resistance can be optimized.
    Type: Application
    Filed: May 22, 2019
    Publication date: September 12, 2019
    Inventors: Naoto TSUJI, Hideaki SEKI
  • Patent number: 10243215
    Abstract: A positive electrode active material for lithium ion secondary battery includes: active material particles including one or more compounds including Li and a transition metal; and a coating layer coating at least a part of a surface of the active material particles. The coating layer includes at least one of graphene or multilayer graphene The coating layer has a Raman spectrum with a G band (a peak of 1530 cm?1 to 1630 cm?1), a D band (a peak of 1300 cm?1 to 1400 cm?1), and a 2D band (a peak of 2650 cm?1 to 2750 cm?1). At least the intensity of the 2D band normalized by the intensity of the G band (2Dint/Gint) satisfies 0.05?2Dint/Gint.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: March 26, 2019
    Assignee: TDK CORPORATION
    Inventors: Junpei Shitaba, Hideaki Seki, Hiroyuki Miyabara
  • Patent number: 10211456
    Abstract: A positive electrode active material for a lithium ion secondary battery contains: a first compound represented by chemical formula Lix(NiyMa1-y)O2 (0.95?x?1.05, 0.70?y?0.95, where Ma is at least one element selected from Co, Mn, V, Ti, Fe, Zr, Nb, Mo, Al, and W); and a second compound represented by chemical formula LiVOPO4. W>5.0° C., where W is a full width at half maximum of an exothermic peak obtained between 150° C. and 260° C. by differential scanning calorimetry (DSC) performed on a mixture of the first compound and the second compound under a condition of 5° C./min.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: February 19, 2019
    Assignee: TDK CORPORATION
    Inventors: Hideaki Seki, Akinobu Nojima
  • Publication number: 20190027779
    Abstract: A negative electrode for a lithium ion secondary battery includes a current collector and an active material-containing layer disposed on the current collector. The active material-containing layer includes: a first negative electrode active material including a carbon material; a second negative electrode active material including a metal element or a metalloid element as a constituent element, the metal element or the metalloid element being capable of forming an alloy with lithium; and a binder. The first negative electrode active material contains a spherical graphite, and the binder contains an acrylic resin.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 24, 2019
    Applicant: TDK CORPORATION
    Inventors: Hiroshi Sasagawa, Yasuyuki Kawanaka, Hideaki Seki
  • Publication number: 20180287200
    Abstract: In this non-aqueous electrolyte secondary battery, a positive terminal and a negative terminal extend in a first direction, protrude from a laminated cell stack, and are provided so that a center line is interposed therebetwen, the center line passing through a midpoint of both ends of the laminated cell stack in a second direction orthogonal to the first direction and extending in the first direction when the laminated cell stack is seen in plan view, and a first terminal with higher heat dissipation efficiency among the positive terminal and the negative terminal is provided in a location closer to the center line than a location of a second terminal with lower heat dissipation efficiency among the positive terminal and the negative terminal.
    Type: Application
    Filed: March 20, 2018
    Publication date: October 4, 2018
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Hideaki SEKI, Hirofumi KAKUTA, Akinobu NOJIMA, Shin FUJITA
  • Publication number: 20180287199
    Abstract: A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)int/(201)int) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)int/(201)int) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35?(002)int/(201)int?0.53 and 0.46?(102)int/(201)int?0.63, respectively, LixVOPO4??(1).
    Type: Application
    Filed: March 15, 2018
    Publication date: October 4, 2018
    Applicant: TDK CORPORATION
    Inventors: Junpei SHITABA, Hideaki SEKI, Masahiro TSUCHIYA
  • Patent number: 9825295
    Abstract: A positive electrode active material contains a compound represented by a chemical formula LiVOPO4. A crystal system of the compound is an orthorhombic system, and the amount of tetravalent V of the compound is 27.7 mass % or more and 28.2 mass % or less.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: November 21, 2017
    Assignee: TDK CORPORATION
    Inventors: Hideaki Seki, Atsushi Sano, Masaki Sobu, Tomoshi Nakamoto
  • Publication number: 20170288214
    Abstract: A positive electrode active material for a lithium ion secondary battery contains: a first compound represented by chemical formula Lix(NiyMa1-y)O2 (0.95?x?1.05, 0.70?y?0.95, where Ma is at least one element selected from Co, Mn, V, Ti, Fe, Zr, Nb, Mo, Al, and W); and a second compound represented by chemical formula LiVOPO4. W>5.0° C., where W is a full width at half maximum of an exothermic peak obtained between 150° C. and 260° C. by differential scanning calorimetry (DSC) performed on a mixture of the first compound and the second compound under a condition of 5° C./min.
    Type: Application
    Filed: February 21, 2017
    Publication date: October 5, 2017
    Applicant: TDK CORPORATION
    Inventors: Hideaki SEKI, Akinobu NOJIMA
  • Publication number: 20170250401
    Abstract: A positive electrode includes: a positive electrode current collector; and a positive electrode active material layer disposed on the positive electrode current collector. The positive electrode active material layer contains a lithium-containing transition metal oxide represented by composition formula (1) indicated below, and a compound represented by LiVOPO4. The lithium-containing transition metal oxide and the compound represented by LiVOPO4 are dispersed in the positive electrode active material layer. LitNixCoyAlzO2 ??(1) where 0.9<t<1.1, 0.3<x<0.99, 0.01<y<0.4, 0.001<z<0.2, and x+y+z=1.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 31, 2017
    Applicant: TDK CORPORATION
    Inventors: Tetsu SYOJI, Hideaki SEKI, Hirofumi KAKUTA, Shin FUJITA