Patents by Inventor Takahiro Furutani

Takahiro Furutani 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: 20220416227
    Abstract: The alkaline battery of the present invention includes, as power generation components, a positive electrode containing silver oxide as a positive electrode active material, a negative electrode, a separator, and an alkaline electrolyte solution. At least one of the power generation components contains tellurium or a compound of tellurium. The total content of tellurium element contained in components housed in the battery is 0.4 parts by mass or more with respect to 100 parts by mass of the total amount of silver element in the positive electrode active material. The positive electrode is substantially free of cadmium.
    Type: Application
    Filed: November 24, 2020
    Publication date: December 29, 2022
    Applicant: Maxell, Ltd.
    Inventors: Yusuke Inoue, Yoshihisa Hirose, Takahiro Furutani
  • Patent number: 11515594
    Abstract: Provided is a waterproof device that is impervious to water and can also use an air cell as a power source. The waterproof device of the present disclosure is worn on the body and includes a circuit unit, a power source, and an exterior package that protects the circuit unit and the power source. At least a part of the exterior package is composed of a water-repellent air-permeable sheet. The water-repellent air-permeable sheet has a water pressure resistance of 12 kPa or more.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 29, 2022
    Assignee: Maxell, Ltd.
    Inventors: Takahiro Furutani, Yasuhiro Naka
  • Publication number: 20220306781
    Abstract: A member to be compressed for an electrochemical device obtained by crosslinking a crosslinkable composition containing a fluorine-containing elastomer containing a unit based on at least one crosslinkable group-containing monomer selected from the group consisting of a crosslinkable group-containing monomer (1) represented by the general formula (1): CX12?CF—Rf1—X2 wherein each X1 independently represents H or F, and Rf1 represents a fluorinated alkylene group or a fluorinated oxyalkylene group, and X2 represents I or Br; and a crosslinkable group-containing monomer (2) represented by the general formula (2): CX32?CX3—Z1—CX3?CX32 wherein each X3 independently represents H, F, an alkyl group or a fluorinated alkyl group, and Z1 represents an alkylene group, a fluorinated alkylene group, a cycloalkylene group, a fluorinated cycloalkylene group, an oxyalkylene group or a fluorinated oxyalkylene group.
    Type: Application
    Filed: June 15, 2020
    Publication date: September 29, 2022
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Yusuke KAMIYA, Takahiro FURUTANI, Kouhei TAKEMURA, Riku YAMAGUCHI, Keisuke SHIOMI, Masaki IRIE
  • Publication number: 20220271294
    Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a polymer including a vinylidene fluoride unit and at least one copolymerization unit (A) selected from a monomer unit having a structure represented by formula (1) below and a monomer unit having a structure represented by formula (2) below: where Rf1 and Rf2 are each a linear or branched fluorinated alkyl or fluorinated alkoxy group with 1 to 12 carbon atoms, which optionally contains an oxygen atom between carbon-carbon atoms when the number of carbon atoms is 2 or more. The slurry contains sulfide-based solid electrolyte particles, the binder and a solvent. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 25, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takaya YAMADA, Junpei TERADA, Takahiro FURUTANI, Akinori TANI, Kae FUJIWARA
  • Publication number: 20220271293
    Abstract: A binder and a slurry suitable for use in the production of an electrode in a sulfide-based solid-state battery. The binder contains sulfide-based solid electrolyte particles, and is a fluorine-containing elastomer in which resin end functional groups satisfy: 0.01?([—CH2OH]+[—COOH])/([—CH3]+[—CF2H]+[—CH2OH]+[—CH2I]+[—OC(O)RH]+[—COOH]?0.25 where R represents an alkyl group with 1 to 20 carbon atoms. Also disclosed is an electrode including an electrode active material layer formed using the slurry and a lithium-ion secondary solid state battery including the electrode.
    Type: Application
    Filed: July 22, 2020
    Publication date: August 25, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takaya YAMADA, Junpei TERADA, Takahiro FURUTANI, Kae FUJIWARA, Akinori TANI
  • Publication number: 20220251262
    Abstract: Provided is a member to be compressed for an electrochemical device obtained by crosslinking a crosslinkable composition containing a fluorine-containing elastomer, wherein the fluorine-containing elastomer exhibits a difference ?G? (G?(100° C.)?G?(180° C.)) between the storage elastic modulus G?(100° C.) at a measurement temperature of 100° C. and the storage elastic modulus G?(180° C.) at a measurement temperature of 180° C., in the dynamic viscoelasticity test (strain amplitude: 0.5 Deg; frequency: 100 CPM) with a rubber process analyzer satisfying the following conditions: 40 kPa<?G?<175 kPa.
    Type: Application
    Filed: June 15, 2020
    Publication date: August 11, 2022
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Yusuke KAMIYA, Takahiro FURUTANI, Kouhei TAKEMURA, Keisuke SHIOMI, Masaki IRIE
  • Publication number: 20220149479
    Abstract: A sheet-type cell disclosed in this application includes an outer case and a power generation element contained in the outer case. The power generation element includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The separator is constituted by a porous resin sheet. The outer case includes a first outer case member and a second outer case member. Each outer case member includes a thermally fusible resin layer. The first outer case member and the second outer case member are disposed on respective opposite sides of the power generation element. A periphery of the first outer case member and a periphery of the second outer case member are sealed by thermally welding, with a periphery of the separator interposed between the peripheries of the first and second outer case members.
    Type: Application
    Filed: March 9, 2020
    Publication date: May 12, 2022
    Applicant: Maxell Holdings, Ltd.
    Inventors: Yasuhiro Naka, Takahiro Furutani
  • Publication number: 20220093996
    Abstract: A negative electrode for an aqueous electrolyte cell disclosed in the present application contains an electrolytic zinc foil as an active material layer. The electrolytic zinc foil is preferably composed of zinc alloy containing Bi in a proportion of 0.001 to 0.2% by mass. A sheet-type cell disclosed in the present application includes a sheet-type outer case and a power generation element contained in the sheet-type outer case. The power generation element includes a positive electrode, a negative electrode, a separator, and an aqueous electrolyte solution. The negative electrode is the negative electrode for an aqueous electrolyte cell of the present application.
    Type: Application
    Filed: February 7, 2020
    Publication date: March 24, 2022
    Applicant: Maxell Holdings, Ltd.
    Inventors: Yasuhiro Naka, Takahiro Furutani
  • Publication number: 20210380739
    Abstract: A fluorine-containing elastomer including a vinylidene fluoride unit and an unsaturated ether unit selected from a unit based on a monomer (1) represented by the general formula (1): CH2?CFCF2—O—Rf1 and a unit based on a monomer (2) represented by the general formula (2): CH2?CF—O—Rf2, and having a glass transition temperature of 20° C. or lower, a crosslinkable composition including the fluorine-containing elastomer, and a molded article obtained from the fluorine-containing elastomer or the crosslinkable composition.
    Type: Application
    Filed: October 18, 2019
    Publication date: December 9, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro FURUTANI, Akihiro GOTOU, Masaki IRIE
  • Publication number: 20210292450
    Abstract: A composition including a fluorine-containing polymer and a cross-linking agent, wherein the fluorine-containing polymer contains a vinylidene fluoride unit, a unit of a fluorine-containing monomer (1) represented by the following general formula (1): CHX1?CX2Rf ??(1) wherein one of X1 and X2 is H, the other is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms, and a unit of a monomer providing a crosslinking site. The monomer providing a crosslinking site is a monomer having at least one crosslinkable group selected from a cyano group, a carboxyl group, an alkoxycarbonyl group and a hydroxyl group. Also disclosed is a crosslinked rubber molded article obtained by crosslinking the composition.
    Type: Application
    Filed: July 22, 2019
    Publication date: September 23, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takahiro FURUTANI, Rina TAMAI, Eisaku SUMINO, Yusuke KAMIYA, Junpei TERADA, Masaki IRIE
  • Publication number: 20210280938
    Abstract: A cell roll disclosed in the present application includes a sheet-type continuous body including a long sheet-type outer case body and a plurality of power generation elements. The sheet-type outer case body includes a resin film. The power generation elements are individually sealed in the sheet-type outer case body. The power generation elements are located side by side in the longitudinal direction of the sheet-type outer case body. Each of the power generation elements includes a positive electrode, a negative electrode, a separator, and an electrolyte. The sheet-type outer case body and the power generation elements form individual cells. The sheet-type continuous body is wound in a spiral fashion.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 9, 2021
    Applicant: Maxell Holdings, Ltd.
    Inventors: Takahiro FURUTANI, Yasuhiro NAKA
  • Publication number: 20210091385
    Abstract: Provided is a sheet-type cell with excellent reliability. The sheet-type cell of the present invention includes power generation elements, including a positive electrode, a negative electrode, a separator, and an electrolyte solution, and a sheet-type outer case made of a resin film in which the power generation elements are contained. The electrolyte solution is an aqueous electrolyte solution. The resin film has an electrically insulating moisture barrier layer. The sheet-type cell is a primary cell. The moisture barrier layer of the resin film is preferably composed of at least an inorganic oxide. The pH of the electrolyte solution is preferably 3 or more and less than 12.
    Type: Application
    Filed: March 13, 2019
    Publication date: March 25, 2021
    Applicant: Maxell Holdings, Ltd.
    Inventors: Takahiro FURUTANI, Yasuhiro NAKA, Hiroaki ONO, Mitsutoshi WATANABE
  • Patent number: 10950910
    Abstract: Provided are an air cell that has a reduced environmental impact and has favorable discharge characteristics as well as a patch equipped with the air cell. An air cell of the present invention includes, an outer case, which contains a positive electrode having a catalyst layer containing a catalyst and a binder, a negative electrode containing a metal material, a separator, and an electrolytic solution. The electrolytic solution is an aqueous solution with a pH of 3 or more and less than 12. The separator has an air permeability of 10 sec/100 ml or more, or the positive electrode has a porous sheet made of carbon as a current collector. A patch of the present invention includes the air cell of the present invention as a power supply.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: March 16, 2021
    Assignee: Maxell Holdings, Ltd.
    Inventors: Takahiro Furutani, Kunihiko Koyama, Mitsutoshi Watanabe, Hiroaki Ono
  • Publication number: 20210024664
    Abstract: A molded product having a surface that is to be in contact with a coolant, the surface being formed of a crosslinked product of an amorphous fluorine-containing elastomer having a glass transition temperature of 25° C. or less, the fluorine-containing elastomer being a copolymer of: vinylidene fluoride; a fluorine-containing monomer represented by formula (1) below: CHXa?CXbRf??(1) wherein one of Xa and Xb is H, the other thereof is F, and Rf is a linear or branched fluoroalkyl group having 1 to 12 carbon atoms; and another monomer copolymerizable therewith, wherein a molar ratio of units of the vinylidene fluoride to units of the fluorine-containing monomer is 87/13 to 20/80, and units of the other monomer account for 0 to 50 mol % based on all monomer units.
    Type: Application
    Filed: March 26, 2019
    Publication date: January 28, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Junpei TERADA, Yusuke KAMIYA, Takahiro FURUTANI
  • Publication number: 20200373527
    Abstract: Provided is a waterproof device that is impervious to water and can also use an air cell as a power source. The waterproof device of the present disclosure is worn on the body and includes a circuit unit, a power source, and an exterior package that protects the circuit unit and the power source. At least a part of the exterior package is composed of a water-repellent air-permeable sheet. The water-repellent air-permeable sheet has a water pressure resistance of 12 kPa or more.
    Type: Application
    Filed: August 24, 2018
    Publication date: November 26, 2020
    Applicant: Maxell Holdings, Ltd.
    Inventors: Takahiro FURUTANI, Yasuhiro NAKA
  • Publication number: 20190363412
    Abstract: Provided are an air cell that has a reduced environmental impact and has favorable discharge characteristics as well as a patch equipped with the air cell. An air cell of the present invention includes, an outer case, which contains a positive electrode having a catalyst layer containing a catalyst and a binder, a negative electrode containing a metal material, a separator, and an electrolytic solution. The electrolytic solution is an aqueous solution with a pH of 3 or more and less than 12. The separator has an air permeability of 10 sec/100 ml or more, or the positive electrode has a porous sheet made of carbon as a current collector. A patch of the present invention includes the air cell of the present invention as a power supply.
    Type: Application
    Filed: September 20, 2017
    Publication date: November 28, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Takahiro FURUTANI, Kunihiko KOYAMA, Mitsutoshi WATANABE, Hiroaki ONO
  • Publication number: 20190350665
    Abstract: Provided is a wearable patch that can reliably interrupt the power supply from the cell after use and can be disposed of as it is. Moreover, provided is a sheet-type cell that can reliably interrupt the power supply after use and can be disposed of safely. The wearable patch is worn on the body and includes a functional element, a drive circuit unit that operates the functional element, and a cell as a power source. A cutting facilitating member is formed to allow a predetermined portion of the wearable patch to be cut with a force of 200 N or less so that the power supply from the cell to the drive circuit unit is interrupted.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 21, 2019
    Applicant: Maxell Holdings, Ltd.
    Inventors: Takahiro FURUTANI, Mitsutoshi WATANABE, Hiroaki ONO
  • Publication number: 20190348730
    Abstract: One aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte solution that are housed in a sheet-like outer case. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12. The electrolyte solution contains a water-soluble high-boiling solvent with a boiling point of 150° C. or more in an amount of 3 to 30% by mass of the total solvent. Another aspect of the sheet-like air cell of the present invention includes a positive electrode having a catalyst layer, a negative electrode, a separator, and an electrolyte that are housed in a sheet-like outer case. The electrolyte is obtained by blending an electrolyte solution and a thickening agent. The electrolyte solution is an aqueous solution that contains an electrolyte salt and has a pH of 3 or more and less than 12.
    Type: Application
    Filed: March 12, 2018
    Publication date: November 14, 2019
    Applicant: MAXELL HOLDINGS, LTD.
    Inventors: Takahiro FURUTANI, Hiroaki ONO
  • Patent number: 9673446
    Abstract: A lithium ion secondary battery containing a negative electrode active material containing Si and O as constituent elements and exhibiting excellent charge-discharge cycle characteristics. The lithium ion secondary battery has a positive electrode having a positive electrode material mixture layer, a negative electrode, a separator and a nonaqueous electrolyte containing at least an electrolyte salt and an organic solvent, where the negative electrode has a negative electrode material mixture layer containing a negative electrode active material containing Si and O as constituent elements (the atomic ratio x of O to Si is 0.5?x?1.5). The nonaqueous electrolyte contains the electrolyte salt at a concentration exceeding a concentration at which conductivity in the nonaqueous electrolyte containing the electrolyte salt and the organic solvent is maximized, and the conductivity at 25° C. is 6.5 to 16 mS/cm.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: June 6, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Eri Kojima, Takahiro Furutani, Mitsuhiro Kishimi
  • Patent number: 8999586
    Abstract: The present invention relates to an electrode for a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery using the electrode, and a method for manufacturing the non-aqueous electrolyte secondary battery. The electrode for a non-aqueous electrolyte secondary battery includes a material mixture layer containing an active material and a porous insulating layer. The insulating layer is formed on the material mixture layer. The insulating layer contains a resin having a cross-linked structure and inorganic particles. A mixed layer that includes components of the insulating layer and components of the material mixture layer is provided at the interface between the insulating layer and the material mixture layer.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 7, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Toshiyuki Watanabe, Kunihiko Koyama, Takahiro Furutani, Eri Kojima