Patents by Inventor Takumi HIASA

Takumi HIASA 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: 11742522
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a predetermined cyano ester compound and a cyclic sulfuric acid ester.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: August 29, 2023
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takumi Hiasa, Kazunari Motohashi
  • Publication number: 20230246179
    Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode is an electrode which a lithium ion is to be inserted into and extracted from. The negative electrode includes a negative electrode active material which the lithium ion is to be inserted into and extracted from. The electrolytic solution includes an aqueous solvent. The negative electrode active material includes a titanium-containing compound. The electrolytic solution has a pH that is higher than or equal to 11. Based on a surface analysis of the negative electrode by X-ray photoelectron spectroscopy, a proportion of a sum of respective detectable amounts of lithium, titanium, tin, zirconium, bismuth, and indium to a sum of respective detectable amounts of all of metal elements is greater than or equal to 99 atom %.
    Type: Application
    Filed: March 7, 2023
    Publication date: August 3, 2023
    Inventor: Takumi HIASA
  • Publication number: 20230238593
    Abstract: A secondary battery includes a partition, a positive electrode, a negative electrode, a positive electrode electrolytic solution, a negative electrode electrolytic solution, and a negative electrode capacity restoring electrode, a positive electrode capacity restoring electrode, or both. The partition is disposed between a positive electrode space and a negative electrode space, and allows an alkali metal ion to pass therethrough. The positive electrode is disposed in the positive electrode space and is an electrode which the alkali metal ion is to be inserted into and extracted from. The negative electrode is disposed in the negative electrode space and is an electrode which the alkali metal ion is to be inserted into and extracted from. The positive electrode electrolytic solution is contained in the positive electrode space and includes an aqueous solvent and the alkali metal ion.
    Type: Application
    Filed: March 29, 2023
    Publication date: July 27, 2023
    Inventor: Takumi HIASA
  • Publication number: 20230198002
    Abstract: A secondary battery includes a partition, a positive electrode, a negative electrode, a positive electrode electrolytic solution, and a negative electrode electrolytic solution. The partition is disposed between a positive electrode space and a negative electrode space, and allows a metal ion to pass therethrough. The positive electrode is disposed in the positive electrode space and is an electrode which the metal ion is to be inserted into and extracted from. The negative electrode is disposed in the negative electrode space and is an electrode which the metal ion is to be inserted into and extracted from. The positive electrode electrolytic solution is contained in the positive electrode space and includes an aqueous solvent. The negative electrode electrolytic solution is contained in the negative electrode space and includes an aqueous solvent. The negative electrode electrolytic solution has a pH that is higher than a pH of the positive electrode electrolytic solution.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Inventor: Takumi HIASA
  • Publication number: 20220302500
    Abstract: A secondary battery is provided. The secondary battery includes a cathode; an anode; and an electrolytic solution including a cyano compound.
    Type: Application
    Filed: May 26, 2022
    Publication date: September 22, 2022
    Inventors: Qiaoshu HU, Takumi HIASA, Kazumasa TAKESHI, Graham SANDFORD, Joshua WALTON, Nadejda KRASTEVA, Silvia ROSSELLI, Gabriele NELLES, David DANNER, Vitor DEICHMANN, Dennis CHERCKA, William FORD, Clemens WALL
  • Publication number: 20220255135
    Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. A potential of the positive electrode, versus a lithium reference electrode, at a time of charging is higher than or equal to 4.50 V. The electrolytic solution includes a branched carboxylic acid ester compound.
    Type: Application
    Filed: April 25, 2022
    Publication date: August 11, 2022
    Inventors: Satoshi UMEZU, Yusuke MORINO, Takumi HIASA, Kazunari MOTOHASHI
  • Patent number: 11390720
    Abstract: Provided are a sizing agent coated carbon fiber bundle that has excellent mechanical characteristics when used as a carbon fiber reinforced composite material, as well as excellent ease of handling; a method for manufacturing the same; and a prepreg and carbon fiber reinforced composite material of excellent mechanical characteristics, employing the fiber bundle. The carbon fiber bundle is coated with a sizing agent that includes a polyether aliphatic epoxy compound having two or more epoxy groups per molecule and/or a polyol aliphatic epoxy compound or a non-water-soluble compound having a glass transition temperature of ?100-50° C.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: July 19, 2022
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takumi Hiasa, Daigo Kobayashi, Tomoko Ichikawa
  • Publication number: 20220045369
    Abstract: A secondary battery includes a partition, a negative electrode, a positive electrode, a first aqueous electrolytic solution, and a second aqueous electrolytic solution. The partition separates a first space and a second space from each other and allows a metal ion to pass therethrough between the first space and the second space. The negative electrode is disposed in the first space. The positive electrode is disposed in the second space. The first aqueous electrolytic solution is contained in the first space. The second aqueous electrolytic solution is contained in the second space. The second aqueous electrolytic solution has a pH lower than the first aqueous electrolytic solution.
    Type: Application
    Filed: October 22, 2021
    Publication date: February 10, 2022
    Inventor: Takumi HIASA
  • Publication number: 20220029201
    Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material. The electrolytic solution includes a cyclic sulfuric acid ester compound, a cyclic ether compound, and a chain alkyl dinitrile compound. A ratio of a weight (mg) of the cyclic sulfuric acid ester compound to a weight (g) of the positive electrode active material is from 0.01 to 2.
    Type: Application
    Filed: October 8, 2021
    Publication date: January 27, 2022
    Inventors: Takumi HIASA, Kazunari MOTOHASHI
  • Publication number: 20210320333
    Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a predetermined cyano ester compound and a cyclic sulfuric acid ester.
    Type: Application
    Filed: June 24, 2021
    Publication date: October 14, 2021
    Inventors: Takumi HIASA, Kazunari MOTOHASHI
  • 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: 10991980
    Abstract: The secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution including at least one kind of cyclic nitrogen compounds and at least one of a first nitrile compound and a second nitrile compound.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: April 27, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takumi Hiasa, Toru Odani, Kazumasa Takeshi
  • Publication number: 20200165400
    Abstract: Provided are a sizing agent coated carbon fiber bundle that has excellent mechanical characteristics when used as a carbon fiber reinforced composite material, as well as excellent ease of handling; a method for manufacturing the same; and a prepreg and carbon fiber reinforced composite material of excellent mechanical characteristics, employing the fiber bundle. The carbon fiber bundle is coated with a sizing agent that includes a polyether aliphatic epoxy compound having two or more epoxy groups per molecule and/or a polyol aliphatic epoxy compound or a non-water-soluble compound having a glass transition temperature of ?100-50° C.
    Type: Application
    Filed: December 6, 2019
    Publication date: May 28, 2020
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takumi HIASA, Daigo KOBAYASHI, Tomoko ICHIKAWA
  • Patent number: 10544275
    Abstract: Provided are a sizing agent coated carbon fiber bundle that has excellent mechanical characteristics when used as a carbon fiber reinforced composite material, as well as excellent ease of handling; a method for manufacturing the same; and a prepreg and carbon fiber reinforced composite material of excellent mechanical characteristics, employing the fiber bundle. The carbon fiber bundle is coated with a sizing agent that includes a polyether aliphatic epoxy compound having two or more epoxy groups per molecule and/or a polyol aliphatic epoxy compound or a non-water-soluble compound having a glass transition temperature of ?100-50° C.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: January 28, 2020
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takumi Hiasa, Daigo Kobayashi, Tomoko Ichikawa
  • Publication number: 20200028213
    Abstract: a secondary battery is provided. The secondary battery includes a cathode; an anode; and an electrolytic solution including a carbonyl compound.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Qiaoshu HU, Takumi HIASA, Kazumasa TAKESHI, Graham SANDFORD, Joshua WALTON, Nadejda KRASTEVA, Silvia ROSSELLI, Gabriele NELLES, David DANNER, Vitor DEICHMANN, Dennis CHERCKA, William FORD, Clemens WALL
  • Publication number: 20190267672
    Abstract: The secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution including at least one kind of cyclic nitrogen compounds and at least one of a first nitrile compound and a second nitrile compound.
    Type: Application
    Filed: May 14, 2019
    Publication date: August 29, 2019
    Inventors: Takumi HIASA, Toru ODANI, Kazumasa TAKESHI
  • 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: 10208173
    Abstract: Sizing agent-coated reinforcing fibers include reinforcing fibers and a sizing agent containing a polyrotaxane, the reinforcing fibers being coated with the sizing agent. Provided are sizing agent-coated reinforcing fibers that provide a fiber-reinforced composite material with excellent mechanical properties, a method for producing the sizing agent-coated reinforcing fibers, a prepreg including the sizing agent-coated reinforcing fibers, and a fiber-reinforced composite material with excellent mechanical properties including the sizing agent-coated reinforcing fibers.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: February 19, 2019
    Assignee: TORAY INDUSTRIES, INC.
    Inventors: Takumi Hiasa, Daigo Kobayashi, Tomoko Ichikawa, Makoto Endo
  • Publication number: 20170349720
    Abstract: Provided are a sizing agent coated carbon fiber bundle that has excellent mechanical characteristics when used as a carbon fiber reinforced composite material, as well as excellent ease of handling; a method for manufacturing the same; and a prepreg and carbon fiber reinforced composite material of excellent mechanical characteristics, employing the fiber bundle. The carbon fiber bundle is coated with a sizing agent that includes a polyether aliphatic epoxy compound having two or more epoxy groups per molecule and/or a polyol aliphatic epoxy compound or a non-water-soluble compound having a glass transition temperature of ?100-50° C.
    Type: Application
    Filed: January 13, 2016
    Publication date: December 7, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takumi HIASA, Daigo KOBAYASHI, Tomoko ICHIKAWA
  • Publication number: 20170002154
    Abstract: Sizing agent-coated reinforcing fibers include reinforcing fibers and a sizing agent containing a polyrotaxane, the reinforcing fibers being coated with the sizing agent. Provided are sizing agent-coated reinforcing fibers that provide a fiber-reinforced composite material with excellent mechanical properties, a method for producing the sizing agent-coated reinforcing fibers, a prepreg including the sizing agent-coated reinforcing fibers, and a fiber-reinforced composite material with excellent mechanical properties including the sizing agent-coated reinforcing fibers.
    Type: Application
    Filed: March 4, 2015
    Publication date: January 5, 2017
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takumi HIASA, Daigo KOBAYASHI, Tomoko ICHIKAWA, Makoto ENDO