Patents by Inventor Masayuki Ihara

Masayuki Ihara 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: 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
  • Patent number: 10326167
    Abstract: A secondary battery, includes: a cathode; an anode; and an electrolytic solution including a sulfuric acid compound represented by Xn+[M(Rf)a(CN)b(SO4)c]m?, where Xn+ is one of ions such as a metal ion, M is one of elements such as transition metal elements, Rf is one of groups such as a fluorine group (—F), a is an integer of 0 to 4, b is an integer of 0 to 5, c is an integer of 1 to 4, m is an integer of 1 to 3, and n is an integer of 1 or 2, where one or more of Rf's are a monovalent fluorinated hydrocarbon group in a case where X=lithium (Li), M=boron (B), a=2, b=0, and c=1 are satisfied.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: June 18, 2019
    Assignee: Murata Manufacturing Inc.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • 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: 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
  • Patent number: 10243200
    Abstract: A secondary battery having a cathode, an anode, and an electrolyte is provided. The cathode includes a cathode active material containing at least one kind selected from the group consisting of sulfur S and phosphorus P in a portion near the particle surface of a lithium composite oxide. A content of the kind in the portion is larger than that in the particle of the lithium composite oxide.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: March 26, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masanori Soma, Atsumichi Kawashima, Masayuki Ihara, Hideki Nakai, Kenichi Kawase
  • 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
  • Publication number: 20180358657
    Abstract: A secondary battery includes: a cathode, an anode, and an electrolytic solution including a cyano compound. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.
    Type: Application
    Filed: January 26, 2016
    Publication date: December 13, 2018
    Inventors: Masayuki IHARA, Shigeru FUJITA
  • Patent number: 10147933
    Abstract: A secondary battery having a cathode, an anode, and an electrolyte is provided. The cathode includes a cathode active material containing at least one kind selected from the group consisting of sulfur S and phosphorus P in a portion near the particle surface of a lithium composite oxide. A content of the kind in the portion is larger than that in the particle of the lithium composite oxide.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: December 4, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masanori Soma, Atsumichi Kawashima, Masayuki Ihara, Hideki Nakai, Kenichi Kawase
  • Patent number: 10128535
    Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution. The anode includes a carbon material and styrene-butadiene rubber. The electrolytic solution includes an unsaturated cyclic ester carbonate represented by the following Formula (1). (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. m and n satisfy m?1 and n?0.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 13, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Tadahiko Kubota
  • Publication number: 20180323434
    Abstract: The secondary battery includes an electrolytic solution, a positive electrode and a negative electrode, and the negative electrode includes a plurality of particulate negative electrode active materials, a first negative electrode binder, and a plurality of second negative electrode binders with an average particle size smaller than the plurality of particulate negative electrode active materials. The plurality of particulate negative electrode active materials have an average particle size of 5 ?m or more and 30 ?m or less. The first negative electrode binder includes one or both of a styrene butadiene rubber and a derivative thereof. The plurality of second negative electrode binders include one or both of a polyvinylidene fluoride and a derivative thereof, and the plurality of second negative electrode binders have an average particle size of 0.1 ?m or more and 10 ?m or less.
    Type: Application
    Filed: July 19, 2018
    Publication date: November 8, 2018
    Inventors: Takatoshi MUNAOKA, Masayuki IHARA, Shigeru FUJITA, Takuju HASHIMOTO
  • Publication number: 20180277886
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution including a cyano compound.
    Type: Application
    Filed: November 17, 2015
    Publication date: September 27, 2018
    Inventors: Masayuki IHARA, Shigeru FUJITA
  • Patent number: 10069168
    Abstract: A battery capable of improving high-temperature characteristics is provided. The battery includes a cathode, an anode and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. A solvent of the electrolytic solution includes a main solvent such as a cyclic carbonate which includes halogen and a sub solvent such as carbonate dimer.
    Type: Grant
    Filed: May 20, 2008
    Date of Patent: September 4, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 10044067
    Abstract: A secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution. The anode contains a carbon material and silicon oxide, and a weight ratio (%) of the silicon oxide with respect to a total of the carbon material and the silicon oxide is within a range of 0.01% to 20% both inclusive. The nonaqueous electrolytic solution contains an unsaturated cyclic carbonate ester.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: August 7, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masayuki Iwama, Shinji Hatake, Masayuki Ihara
  • Patent number: 10008746
    Abstract: An electrolytic solution for a secondary battery is provided. The electrolyte solution includes an electrolyte salt; and a solvent including a first solvent and a second solvent; wherein the first solvent includes 4-fluoro-1,3-dioxolane-2-one; and wherein the second solvent includes at least one of Chemical Formula No. 23, Chemical Formula No. 24, or Chemical Formula No. 25.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 10008745
    Abstract: A secondary battery capable of improving high-temperature characteristics is provided. The secondary battery includes a cathode, an anode and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with the electrolytic solution. A solvent of the electrolytic solution includes a main solvent such as a cyclic carbonate which includes halogen and a sub solvent such as carbonate dimer.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: June 26, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Kiyohiko Suzuki, Akinori Kita, Tadahiko Kubota
  • Patent number: 9991552
    Abstract: A secondary battery is provided. The secondary battery includes a cathode; an anode; and a non-aqueous electrolytic solution, wherein the cathode includes any one of a first lithium-containing compound and a second lithium-containing compound, the first lithium-containing compound having a bedded salt-type crystal structure, wherein the first lithium-containing compound includes one or more metal elements (M) other than lithium (Li), wherein the second lithium-containing compound having an olivine-type crystal structure, and wherein the nonaqueous electrolytic solution includes an unsaturated cyclic compound.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: June 5, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshio Nishi, Masayuki Ihara, Hideki Nakai, Akinori Kita
  • Patent number: 9935336
    Abstract: A secondary battery includes: a cathode including a lithium-oxygen-containing compound; an anode; and non-aqueous electrolytic solution including one or more first anions represented by Formula (1). B(XY)xFyRz-??(1) where X is one of a divalent chain hydrocarbon group, a divalent fluorinated chain hydrocarbon group, and nothing; Y is one of a cyano group (—C?N) and an isocyano group (—N+?C—); R is one of a monovalent fluorinated chain hydrocarbon group and a monovalent fluorinated cyclic hydrocarbon group; and x to z are integers that satisfy x>0, y?0, z?0, (x+y+z)=4, and (y+z)>0.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: April 3, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Masayuki Ihara, Shigeru Fujita