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: 11264634
    Abstract: A battery is provided. The battery includes an electrode group including a positive electrode and a negative electrode, and an electrolyte including an electrolytic solution. The electrode group includes an insulating layer having an insulating material, and the electrolytic solution includes a nonaqueous solvent containing propylene carbonate in an amount of 5% by mass or more and an additive including one or more predetermined compounds.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: March 1, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toru Odani, Tadahiko Kubota
  • Patent number: 11121401
    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: Grant
    Filed: October 23, 2018
    Date of Patent: September 14, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kiyoshi Kumagae, Yuri Nakayama, Tadahiko Kubota
  • Patent number: 11005126
    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: Grant
    Filed: March 5, 2019
    Date of Patent: May 11, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    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: 10991978
    Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte layer. The electrolyte layer includes an electrolytic solution, a polymer compound, and a plurality of inorganic particles. The polymer compound includes a copolymer including vinylidene fluoride and hexafluoropropylene, and a ratio W2/W1 of a weight W2 of the electrolytic solution to a weight W1 of the polymer compound is from 2.5 to 50.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: April 27, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shuhei Sugita, Tadahiko Kubota
  • Patent number: 10991979
    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: Grant
    Filed: December 6, 2018
    Date of Patent: April 27, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toru Odani, Tadahiko Kubota
  • Patent number: 10971755
    Abstract: A secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution. The nonaqueous electrolytic solution includes a compound represented by M+[(Z1Y1)(Z2Y2)N]? (where M is a metal element, each of Z1 and Z2 is one of groups such as as a fluorine group, and each of Y1 and Y2 is one of groups such as a sulfonyl group), a compound such as a compound represented by R1-CN (where R1 is a monovalent hydrocarbon group), and a compound such as a compound represented by R22-(CN)n (where R22 is an n-valent hydrocarbon group, and n is an integer of 2 or more). A content of the compound represented by [(Z1Y1)(Z2Y2)N]? in the nonaqueous electrolytic solution is within a range of 2.5 mol/dm3 to 6 mol/dm3 both inclusive.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: April 6, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tadahiko Kubota, Toru Odani, Hiroki Mita
  • Patent number: 10897060
    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: December 12, 2018
    Date of Patent: January 19, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10833362
    Abstract: A secondary battery is provided. The secondary battery includes a cathode; an anode; and an electrolytic solution, wherein the anode comprises an anode active material layer, wherein the anode active material layer comprises a carbon material, wherein the anode active material layer has a thickness from about 40 micrometers to about 100 micrometers, and wherein the electrolytic solution comprises an unsaturated cyclic ester carbonate represented by Formula (2): where R5 and R6 are selected from the group consisting of a hydrogen group, an alkyl group, an alkyne group, and an aryl group.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 10, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Patent number: 10811723
    Abstract: A secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, and an electrolyte layer, and the electrolyte layer includes an electrolytic solution and a copolymer containing vinylidene fluoride, hexafluoropropylene, and a hetero-unsaturated compound.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: October 20, 2020
    Assignee: Murata Manufacturing Inc.
    Inventors: Kazumasa Takeshi, Aiko Nakamura, Shuhei Sugita, Hiroki Mita, Tadahiko Kubota
  • Patent number: 10749209
    Abstract: A battery includes: a positive electrode; a negative electrode; and an electrolyte. At least one of the electrolyte and the negative electrode contains an aluminum hydroxide, at least a part of a surface of the aluminum hydroxide being modified.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: August 18, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Azumi Nakamura, Tadahiko Kubota, Toru Odani
  • Patent number: 10749212
    Abstract: A battery includes a positive electrode, a negative electrode, and an electrolyte solution, in which the electrolyte solution contains a predetermined compound.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: August 18, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Ryohei Tsuda, Toru Odani, Tadahiko Kubota
  • Patent number: 10714790
    Abstract: A battery, including: a positive electrode; a negative electrode; and an electrolyte layer containing a negative electrode active material.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 14, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Tamura, Norihito Kobayashi, Tadahiko Kubota, Shuhei Sugita, Hiroki Mita, Kazumasa Takeshi
  • Patent number: 10707528
    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: Grant
    Filed: November 16, 2018
    Date of Patent: July 7, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Izaya Okae, Kazumasa Takeshi, Tadahiko Kubota
  • Patent number: 10707539
    Abstract: A battery is provided including an anode, a cathode and an electrolyte; wherein the electrolyte includes one or both of fluoro ethylene carbonate and difluoro ethylene carbonate in an amount of 0.5% by mass or more and 10% by mass or less, wherein the anode includes an anode active material layer provided on an anode current collector, and wherein a thickness of the anode active material layer, after charging the battery, is 58 um or more and 75 um or less.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: July 7, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akira Yamaguchi, Kunihiko Hayashi, Tadahiko Kubota, Hiroyuki Suzuki, Akira Ichihashi, Yuzuru Fukushima, Hironori Sato, Masaki Kuratsuka, Hideto Watanabe, Kimio Tajima, Masahiro Miyamoto
  • Patent number: 10680286
    Abstract: A nonaqueous electrolyte battery includes: a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode contains, as a positive electrode active material, a positive electrode material having a surface composition represented by the following formula (I); the nonaqueous electrolyte contains a halogenated carbonate represented by any of the following formulae (1) to (2) and an alkylbenzene represented by the following formula (3); a content of the halogenated carbonate is 0.1% by mass or more and not more than 50% by mass relative to the nonaqueous electrolyte; and a content of the alkylbenzene is 0.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: June 9, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toru Odani, Akira Yamaguchi, Masahiro Miyamoto, Tadahiko Kubota
  • 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