Patents by Inventor Tamotsu Yamamoto

Tamotsu 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: 10854913
    Abstract: Provided is a solid electrolyte including electrolyte particles, wherein each of the electrolyte particles includes at least one of an O—S—O structure and an O—S—OH structure.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: December 1, 2020
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu Yamamoto
  • Patent number: 10505185
    Abstract: A solid electrolyte including Li, Al, P, O, and N, wherein the solid electrolyte has a P2O7 structure.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: December 10, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Masaharu Hida, Satoru Watanabe, Tamotsu Yamamoto
  • Patent number: 10505221
    Abstract: A solid electrolyte includes a particle having a first portion that includes, as constituent elements, lanthanum (La), lithium, titanium and oxygen, and a second portion that covers a surface of the first portion and includes, as constituent elements, lanthanum, lithium, titanium and oxygen and in which sulfur is coupled to an oxygen deficient portion and at least a surface is oxidized.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 10, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu Yamamoto
  • Publication number: 20190123354
    Abstract: A lithium ion secondary battery includes a positive electrode containing a material denoted by a composition formula Li2Co1-xNixP2O7 (0.00<x?0.20), a negative electrode, and an electrolyte disposed between the positive electrode and the negative electrode.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 25, 2019
    Applicant: FUJITSU LIMITED
    Inventors: Tomochika KURITA, Tamotsu YAMAMOTO
  • Publication number: 20180331390
    Abstract: Provided is a solid electrolyte including electrolyte particles, wherein each of the electrolyte particles includes at least one of an O—S—O structure and an O—S—OH structure.
    Type: Application
    Filed: July 25, 2018
    Publication date: November 15, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu Yamamoto
  • Patent number: 9991557
    Abstract: A composite solid electrolyte, which includes a solid electrolyte containing LaF3, and solid electrolyte particles, which are either Li3xLa2/3-xTiO3 (0?x??) or Li7La3Zr2O12 connected via the solid electrolyte.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: June 5, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Homma, Tamotsu Yamamoto, Satoru Watanabe
  • Publication number: 20170324087
    Abstract: A solid electrolyte including Li, Al, P, O, and N, wherein the solid electrolyte has a P2O7 structure.
    Type: Application
    Filed: July 24, 2017
    Publication date: November 9, 2017
    Applicant: FUJITSU LIMITED
    Inventors: MASAHARU HIDA, Satoru Watanabe, Tamotsu YAMAMOTO
  • Publication number: 20170162903
    Abstract: A solid electrolyte includes a particle having a first portion that includes, as constituent elements, lanthanum (La), lithium, titanium and oxygen, and a second portion that covers a surface of the first portion and includes, as constituent elements, lanthanum, lithium, titanium and oxygen and in which sulfur is coupled to an oxygen deficient portion and at least a surface is oxidized.
    Type: Application
    Filed: February 23, 2017
    Publication date: June 8, 2017
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu YAMAMOTO
  • Patent number: 9666541
    Abstract: An electronic device includes: a substrate; a first all-solid-state secondary cell provided on the substrate, the first all-solid-state secondary cell including a first electrode layer, a solid electrolyte layer, and a second electrode layer; a first transistor including a first source drain, a second source drain electrically connected to the second electrode layer, and a first gate electrode; a first terminal electrically connected to the first electrode layer; a second terminal to control a potential of the first gate electrode; a third terminal electrically connected to the first source drain; and a sealing layer covering the first all-solid-state secondary cell and the first transistor, wherein the first terminal, the second terminal, and the third terminal are exposed on an upper surface of the sealing layer.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 30, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Osamu Tsuboi, Ikuo Soga, Tamotsu Yamamoto
  • Patent number: 9627161
    Abstract: A multi-directional operating switch to be used chiefly for operating a variety of electronic apparatuses is disclosed. This operating switch can determine a tilt angle of an operating body accurately. The operating switch comprises a fixed electrode body, a movable electrode body made of conductive material, and the operating body. The fixed electrode body includes a first fixed electrode on its top face. The movable electrode body is disposed on the fixed electrode body and includes a first pressing projection protruding toward the first fixed electrode. The operating body is disposed on the movable electrode body and can be tilted such that it presses the first pressing projection from above. The movable electrode body is elastic, so that the first pressing projection can be deformed such that an electrostatic capacity generated between the first pressing projection and the first fixed electrode can be changed.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: April 18, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Tamotsu Yamamoto
  • Patent number: 9595736
    Abstract: The lithium-ion conductor contains a crystal structure whose composition formula is represented by Li7+2xP1-xBxS6 (0<x?1). The crystal structure contains a LiS4 tetrahedron and a BS4 tetrahedron, a triangle window of the LiS4 tetrahedron through which lithium ions pass becomes large caused by the BS4 tetrahedron, and an ionic conductive path is expanded. Furthermore, lithium ions being a conductive carrier are added corresponding to B quantity x. Consequently, a lithium-ion conductor that exhibits excellent ion conductive property is realized. By using the lithium-ion conductor for a solid electrolyte, an all-solid lithium-ion secondary battery with high characteristics is realized.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: March 14, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu Yamamoto, Tsutomu Tanaka
  • Publication number: 20160359192
    Abstract: A composite solid electrolyte, which includes a solid electrolyte containing LaF3, and solid electrolyte particles, which are either Li3xLa2/3-xTiO3 (0?x??) or Li7La3Zr2O12 connected via the solid electrolyte.
    Type: Application
    Filed: August 17, 2016
    Publication date: December 8, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Homma, Tamotsu YAMAMOTO, Satoru Watanabe
  • Patent number: 9306418
    Abstract: An uninterruptible power-supply apparatus has a storage battery including a first electrode and a second electrode, an output cable configured to output a discharge current of the storage battery to an external power line to be a backup target, and a first connection portion configured to externally take out a voltage of the first electrode.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: April 5, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Kensuke Yoshida, Tsutomu Tanaka, Tomochika Kurita, Tamotsu Yamamoto, Masaaki Sasa
  • Publication number: 20160013140
    Abstract: An electronic device includes: a substrate; a first all-solid-state secondary cell provided on the substrate, the first all-solid-state secondary cell including a first electrode layer, a solid electrolyte layer, and a second electrode layer; a first transistor including a first source drain, a second source drain electrically connected to the second electrode layer, and a first gate electrode; a first terminal electrically connected to the first electrode layer; a second terminal to control a potential of the first gate electrode; a third terminal electrically connected to the first source drain; and a sealing layer covering the first all-solid-state secondary cell and the first transistor, wherein the first terminal, the second terminal, and the third terminal are exposed on an upper surface of the sealing layer.
    Type: Application
    Filed: September 18, 2015
    Publication date: January 14, 2016
    Inventors: Osamu Tsuboi, Ikuo Soga, Tamotsu YAMAMOTO
  • Publication number: 20150325392
    Abstract: A multi-directional operating switch to be used chiefly for operating a variety of electronic apparatuses is disclosed. This operating switch can determine a tilt angle of an operating body accurately. The operating switch comprises a fixed electrode body, a movable electrode body made of conductive material, and the operating body. The fixed electrode body includes a first fixed electrode on its top face. The movable electrode body is disposed on the fixed electrode body and includes a first pressing projection protruding toward the first fixed electrode. The operating body is disposed on the movable electrode body and can be tilted such that it presses the first pressing projection from above. The movable electrode body is elastic, so that the first pressing projection can be deformed such that an electrostatic capacity generated between the first pressing projection and the first fixed electrode can be changed.
    Type: Application
    Filed: July 19, 2013
    Publication date: November 12, 2015
    Inventor: TAMOTSU YAMAMOTO
  • Patent number: 9142861
    Abstract: A lithium ionic conductor (solid electrolyte) contains lithium (Li), phosphorus (P), boron (B) and sulfur (S) as constituent elements and has a crystal structure that boron (B) is substituted for part of phosphorus (P) in the ? structure of Li3PS4.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: September 22, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Kenji Homma, Tamotsu Yamamoto, Tsutomu Tanaka
  • Publication number: 20150200421
    Abstract: The lithium-ion conductor contains a crystal structure whose composition formula is represented by Li7+2xP1-xBxS6 (0<x?1). The crystal structure contains a LiS4 tetrahedron and a BS4 tetrahedron, a triangle window of the LiS4 tetrahedron through which lithium ions pass becomes large caused by the BS4 tetrahedron, and an ionic conductive path is expanded. Furthermore, lithium ions being a conductive carrier are added corresponding to B quantity x. Consequently, a lithium-ion conductor that exhibits excellent ion conductive property is realized. By using the lithium-ion conductor for a solid electrolyte, an all-solid lithium-ion secondary battery with high characteristics is realized.
    Type: Application
    Filed: March 23, 2015
    Publication date: July 16, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Homma, Satoru Watanabe, Tamotsu YAMAMOTO, Tsutomu TANAKA
  • Patent number: 9075592
    Abstract: An information processing system includes: a plurality of information processing devices; a plurality of power storage devices configured to supply DC power to any of the plurality of information processing devices; a plurality power source devices configured to supply DC power to the plurality of power storage devices; and an arithmetic unit configured to, in accordance with the charged state of any of the plurality of power storage devices and a task to be processed by the information processing device to which DC power is supplied from the power storage device, allocating the task to be processed by the information processing device to an information processing device to which DC power is not supplied from the power storage device.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: July 7, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Kensuke Yoshida, Tsutomu Tanaka, Tomochika Kurita, Tamotsu Yamamoto, Masaaki Sasa
  • Patent number: 9046969
    Abstract: An input device includes an electrode part, a switching circuit, a driving circuit, a detecting circuit, and a controller. The electrode part includes a plurality of electrode pieces. The switching circuit is formed of a plurality of switches connected to the electrode pieces respectively. The driving circuit and the detecting circuit are connected to the electrode part via the switching circuit. The controller is connected to the driving circuit, the switching circuit, and the detecting circuit. The controller controls the respective switches such that the electrode pieces are individually opened or connected to one of the driving circuit and the detecting circuit.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: June 2, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shinji Kamaeguchi, Tamotsu Yamamoto, Hiroyasu Okada, Takaya Nakamura, Naoyuki Takagi
  • Patent number: 8804311
    Abstract: To provide an electrolyte solution, which contains an electrolyte compound, a molecular structure of which contains a molecular chain containing a repeating unit of alkylene oxide, and contains quaternary ammonium cations at both terminals of the molecular chain.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 12, 2014
    Assignee: Fujitsu Limited
    Inventors: Masaaki Sasa, Tamotsu Yamamoto, Tsutomu Tanaka, Kensuke Yoshida