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).

  • 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: 10680284
    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: Grant
    Filed: January 26, 2016
    Date of Patent: June 9, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • Patent number: 10665903
    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 an ion such as a metal ion, M is an element such as a transition metal element, Rf is a group such as a fluorine group, 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. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: May 26, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • Patent number: 10550000
    Abstract: A secondary battery includes: a cathode; an anode including a carbon material; and non-aqueous electrolytic solution. A photoelectron spectrum of oxygen 1s is obtained from an analysis of the anode by X-ray photoelectron spectroscopy. A first peak positioned in vicinity of 1360 reciprocal centimeters and a second peak positioned in vicinity of 1580 reciprocal centimeters are obtained from an analysis of the carbon material by Raman spectroscopy. A half band width ?W1 of the photoelectron spectrum is about 3 electron volts or more. A half band width ?W2 of the second peak is about 19 reciprocal centimeters or more. A ratio I1/I2 of intensity I1 of the first peak to intensity I2 of the second peak is from about 0.15 to about 0.3 both inclusive.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: February 4, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Toshio Nishi, Masayuki Ihara, Hideki Nakai, Akinori Kita
  • Patent number: 10553895
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution including a cyano compound.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: February 4, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • 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
  • Publication number: 20190348670
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution, in which the anode includes a plurality of first anode active material particles, a plurality of second anode active material particles, a first anode binder, and a second anode binder. The plurality of first anode active material particles include carbon, and an R value of the plurality of first anode active material particles is from 0.35 to 0.45, and a median diameter of the plurality of first anode active material particles is from 5 ?m to 14.5 ?m. The plurality of second anode active material particles include carbon, and the R value of the plurality of second anode active material particles is from 0.1 to 0.25, and a median diameter of the plurality of second anode active material particles is from 15 ?m to 25 ?m.
    Type: Application
    Filed: July 26, 2019
    Publication date: November 14, 2019
    Inventors: Takatoshi MUNAOKA, Masayuki IHARA, Shigeru FUJITA
  • Patent number: 10411300
    Abstract: A secondary battery includes a cathode, an anode, and an electrolytic solution. The electrolytic solution contains an electrolytic solution material together with a nonaqueous solvent and an electrolyte salt. The electrolytic solution material includes one or more of first unsaturated compounds and second unsaturated compounds represented, and one or more of phenol-type compounds, phosphorus-containing compounds, and sulfur-containing compounds.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: September 10, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Masayuki Ihara, Shigeru Fujita
  • Patent number: 10403926
    Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode having a positive electrode active material layer provided on a positive electrode collector, a negative electrode having a negative electrode active material layer provided on a negative electrode collector, and a nonaqueous electrolyte. The nonaqueous electrolyte contains at least one member selected from the group consisting of sulfone compounds represented by the following formulae (1) and (2); and an inorganic phosphorus compound represented by the following formula (3) exists on the surface of a positive electrode active material: R1 represents CmH2m-n1Xn2; X represents a halogen; m represents an integer of from 2 to 7; each of n1 and n2 independently represents an integer of from 0 to 2m; R2 represents CjH2j-k1Zk2; Z represents a halogen; j represents an integer of from 2 to 7; each of k1 and k2 independently represents an integer of from 0 to 2j; each of R3, R4 and R5 independently represents H or OH; and a is 0 or 1.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: September 3, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shinya Wakita, Masayuki Ihara, Masanori Soma, Izaya Okae
  • 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