Patents by Inventor Tadahiko Kubota

Tadahiko Kubota 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: 10566657
    Abstract: [Solving Means] A battery includes: a positive electrode; a negative electrode; and an electrolyte. The electrolyte contains an electrolyte solution, and a polymer compound holding the electrolyte solution. The polymer compound includes a copolymer having at least predetermined two kinds of repeating units.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: February 18, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroki Mita, Kazumasa Takeshi, Tadahiko Kubota
  • Patent number: 10559787
    Abstract: A battery includes a positive electrode, a negative electrode, and an electrolyte. The electrolyte includes an electrolyte solution containing a solvent, an electrolyte salt, and a compound having a predetermined structure.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: February 11, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryohei Tsuda, Toru Odani, Tadahiko Kubota
  • Patent number: 10541449
    Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution. The anode includes a material including Si, Sn, or both as constituent elements. The electrolytic solution includes an unsaturated cyclic ester carbonate represented by the following Formula (1), where X is a divalent group in which m-number of >C?CR1-R2 and n-number of >CR3R4 are bonded in any order; each of R1 to R4 is one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, a monovalent oxygen-containing hydrocarbon group, and a monovalent halogenated oxygen-containing hydrocarbon group; any two or more of the R1 to the R4 are allowed to be bonded to one another; and m and n satisfy m?1 and n?0.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: January 21, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10490845
    Abstract: A battery includes an electrolytic solution, the electrolytic solution includes an unsaturated cyclic ester carbonate represented by the following Formula (1), where X is a divalent group in which m-number of >C=CR1R2 and n-number of >CR3R4 are bonded in any order; each of R1 to R4 is one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, a monovalent oxygen-containing hydrocarbon group, and a monovalent halogenated oxygen-containing hydrocarbon group; any two or more of the R1 to the R4 are allowed to be bonded to one another; and m and n satisfy m?1 and n?0, wherein a content of the unsaturated cyclic ester carbonate in the electrolytic solution is 5 wt % or less, wherein the electrolyte solution further includes one or more of propionate, halogenated ester carbonate, dioxane, sultone, and nitrile.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: November 26, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10403928
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution. The anode or the electrolytic solution, or both contain a metal salt including an unsaturated carbon bond.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: September 3, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ichiro Yamada, Hideki Nakai, Toshio Nishi, Tadahiko Kubota
  • Publication number: 20190260071
    Abstract: A battery includes an electrolytic solution, the electrolytic solution includes an unsaturated cyclic ester carbonate represented by the following Formula (1), where X is a divalent group in which m-number of >C=CR1R2 and n-number of >CR3R4 are bonded in any order; each of R1 to R4 is one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, a monovalent oxygen-containing hydrocarbon group, and a monovalent halogenated oxygen-containing hydrocarbon group; any two or more of the R1 to the R4 are allowed to be bonded to one another; and m and n satisfy m?1 and n?0, wherein a content of the unsaturated cyclic ester carbonate in the electrolytic solution is 5 wt % or less, wherein the electrolyte solution further includes one or more of propionate, halogenated ester carbonate, dioxane, sultone, and nitrile.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Publication number: 20190207257
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The electrolytic solution includes at least one of a first heterocyclic compound and a second heterocyclic compound.
    Type: Application
    Filed: March 5, 2019
    Publication date: July 4, 2019
    Inventors: Takumi HIASA, Toru ODANI, Kazumasa TAKESHI, Tadahiko KUBOTA, Nadejda KRASTEVA, Silvia ROSSELLI, Gabriele NELLES, David DANNER, Vitor DEICHMANN, Dennis CHERCKA, William FORD
  • Patent number: 10326161
    Abstract: A secondary battery includes: a cathode and an anode that are opposed to each other with a separator in between; and an electrolytic solution. The cathode includes a cathode active material layer on a cathode current collector. The anode includes an anode active material layer on an anode current collector. A heat-resistant layer is provided at least in a region in which the cathode active material layer and the anode active material layer are opposed to each other between the cathode and the anode. The heat-resistant layer includes a material having a higher melting point or higher decomposition temperature than a melting point or decomposition temperature of the separator. The electrolytic solution includes an unsaturated cyclic ester carbonate.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: June 18, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10312518
    Abstract: An anode and a secondary battery capable of improving the charge and discharge efficiency are provided. The anode includes an anode current collector, and an anode active material layer provided on the anode current collector. The anode active material layer has a plurality of anode active material particles containing at least one of a simple substance of silicon, a compound of silicon, a simple substance of tin and a compound of tin, and has a coat containing an oxo acid salt in at least part of the surface of the anode active material particles.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: June 4, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamaguchi, Hideki Nakai, Masayuki Ihara, Tadahiko Kubota, Shigeru Fujita
  • Publication number: 20190157719
    Abstract: An electrolytic solution for an electrochemical device including a negative electrode is provided. The negative electrode includes a magnesium-based material, and the electrolytic solution includes a 2,2,6,6-tetramethylpiperidine-1-oxyl free radical or a derivative of the 2,2,6,6-tetramethylpiperidine-1-oxyl free radical.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Inventors: Ryuhei MATSUMOTO, Yuri NAKAYAMA, Tadahiko KUBOTA
  • Patent number: 10290899
    Abstract: A secondary battery includes a cathode; an anode; and (1) a first polymer compound layer disposed between the cathode and the anode and being adjacent to the cathode, (2) a second polymer compound layer disposed between the cathode and the anode and being adjacent to the anode, or (3) the first polymer compound layer and the second polymer compound layer. One or both of the first polymer compound layer and the second polymer compound layer contain a polymer compound containing fluorine (F) as a constituent element and a conductive material dispersed in the polymer compound.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: May 14, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shuhei Sugita, Tadahiko Kubota
  • Publication number: 20190115623
    Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution including a cyano compound, the cyano compound including a compound represented by R1-O—C(?O)—O—R2 (R1, R2, or both include a cyano-group-containing group), a compound represented by R3-C(?O)—O—R4 (R4 includes the cyano-group-containing group), or both.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Inventors: MASAYUKI IHARA, TADAHIKO KUBOTA
  • Publication number: 20190109346
    Abstract: A battery is provided with a positive electrode, a negative electrode and an electrolyte. In the battery, a first compound that is an unsaturated fluorine compound and a second compound that is a nitrile compound are contained.
    Type: Application
    Filed: December 6, 2018
    Publication date: April 11, 2019
    Inventors: Toru ODANI, Tadahiko KUBOTA
  • Publication number: 20190103631
    Abstract: The secondary battery includes an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode. The polymer compound includes one or both of a first polymer compound and a second polymer compound. The first polymer compound further includes a first homopolymer and one or both of a second homopolymer and a second copolymer. The second polymer compound further includes a third copolymer and one or both of a fourth homopolymer and a fourth copolymer.
    Type: Application
    Filed: November 16, 2018
    Publication date: April 4, 2019
    Inventors: Izaya OKAE, Kazumasa TAKESHI, Tadahiko KUBOTA
  • Publication number: 20190058209
    Abstract: A method for producing a negative electrode for magnesium secondary batteries includes: providing a current collector having an underlying layer including a metal having a higher ionization tendency than magnesium, where the underlying layer is formed on a surface of the current collector; and forming a negative electrode active material layer including a magnesium layer on the current collector by a chemical plating method using the underlying layer as a base material.
    Type: Application
    Filed: October 23, 2018
    Publication date: February 21, 2019
    Inventors: Kiyoshi KUMAGAE, Yuri NAKAYAMA, Tadahiko KUBOTA
  • Patent number: 10205163
    Abstract: A battery including an anode with an anode active material layer that includes anode active material particles made of an anode active material including at least one of silicon and tin as an element. An oxide-containing film including an oxide of at least one kind selected from the group consisting of silicon, germanium and tin is formed in a region of the surface of each anode active material particle in contact with an electrolytic solution by a liquid-phase method such as a liquid-phase deposition method. The region in contact with the electrolytic solution of the surface of each anode active material particle is covered with the oxide-containing film. The thickness of the oxide-containing film is preferably within a range from 0.1 nm to 500 nm both inclusive.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: February 12, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hiroyuki Yamaguchi, Hiroshi Horiuchi, Kenichi Kawase, Tadahiko Kubota, Hideki Nakai, Takakazu Hirose
  • Patent number: 10177407
    Abstract: Provided is a secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (1).
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 8, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Hiroki Mita, Tadahiko Kubota
  • Patent number: 10170793
    Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution including a cyano compound, the cyano compound including a compound represented by R1-O—C(?O)—O—R2 (R1, R2, or both include a cyano-group-containing group), a compound represented by R3-C(?O)—O—R4 (R4 includes the cyano-group-containing group), or both.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: January 1, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10164290
    Abstract: A secondary battery is provided. The secondary battery includes a cathode; an anode; and a gel electrolyte, wherein the gel electrolyte includes an electrolytic solution and a polymer, and the electrolytic solution includes an unsaturated cyclic ester carbonate represented by Formula (2): where R5 and R6 are one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, a monovalent oxygen-containing hydrocarbon group, and a monovalent halogenated oxygen-containing hydrocarbon group; and where R5 and R6 may be bonded to each other.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: December 25, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Publication number: 20180366783
    Abstract: A secondary battery is provided. The secondary battery includes a cathode; an anode; and a gel electrolyte, wherein the gel electrolyte includes an electrolytic solution and a polymer, and the electrolytic solution includes an unsaturated cyclic ester carbonate represented by Formula (2): where R5 and R6 are one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, a monovalent oxygen-containing hydrocarbon group, and a monovalent halogenated oxygen-containing hydrocarbon group; and where R5 and R6 may be bonded to each other.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Inventors: Masayuki IHARA, Tadahiko KUBOTA