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).
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Publication number: 20210091385Abstract: 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: ApplicationFiled: March 13, 2019Publication date: March 25, 2021Applicant: Maxell Holdings, Ltd.Inventors: Takahiro FURUTANI, Yasuhiro NAKA, Hiroaki ONO, Mitsutoshi WATANABE
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Patent number: 10950910Abstract: 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: GrantFiled: September 20, 2017Date of Patent: March 16, 2021Assignee: Maxell Holdings, Ltd.Inventors: Takahiro Furutani, Kunihiko Koyama, Mitsutoshi Watanabe, Hiroaki Ono
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Publication number: 20210024664Abstract: 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: ApplicationFiled: March 26, 2019Publication date: January 28, 2021Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Junpei TERADA, Yusuke KAMIYA, Takahiro FURUTANI
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Publication number: 20200373527Abstract: 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: ApplicationFiled: August 24, 2018Publication date: November 26, 2020Applicant: Maxell Holdings, Ltd.Inventors: Takahiro FURUTANI, Yasuhiro NAKA
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Publication number: 20190363412Abstract: 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: ApplicationFiled: September 20, 2017Publication date: November 28, 2019Applicant: MAXELL HOLDINGS, LTD.Inventors: Takahiro FURUTANI, Kunihiko KOYAMA, Mitsutoshi WATANABE, Hiroaki ONO
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Publication number: 20190350665Abstract: 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: ApplicationFiled: January 5, 2018Publication date: November 21, 2019Applicant: Maxell Holdings, Ltd.Inventors: Takahiro FURUTANI, Mitsutoshi WATANABE, Hiroaki ONO
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Publication number: 20190348730Abstract: 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: ApplicationFiled: March 12, 2018Publication date: November 14, 2019Applicant: MAXELL HOLDINGS, LTD.Inventors: Takahiro FURUTANI, Hiroaki ONO
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Patent number: 9673446Abstract: 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: GrantFiled: February 28, 2012Date of Patent: June 6, 2017Assignee: HITACHI MAXELL, LTD.Inventors: Eri Kojima, Takahiro Furutani, Mitsuhiro Kishimi
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Patent number: 8999586Abstract: 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: GrantFiled: February 27, 2013Date of Patent: April 7, 2015Assignee: Hitachi, Ltd.Inventors: Toshiyuki Watanabe, Kunihiko Koyama, Takahiro Furutani, Eri Kojima
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Publication number: 20140186682Abstract: A non-aqueous electrolyte secondary battery of the present invention includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. An insulating layer is provided between the positive electrode and the negative electrode. The insulating layer contains at least one type of hydrogen carbonate selected from a sodium hydrogen carbonate and a potassium hydrogen carbonate. The hydrogen carbonate has an average particle size of 2 to 20 ?m. A content of the hydrogen carbonate is 5 to 80 vol % of the total volume of the insulating layer. The insulating layer has a thickness of 4 to 40 ?m.Type: ApplicationFiled: March 13, 2012Publication date: July 3, 2014Applicant: HITACHI, LTD.Inventors: Kunihiko Koyama, Toshiyuki Watanabe, Takahiro Furutani, Eri Kojima, Masato Harigae
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Publication number: 20140030606Abstract: The method for producing a separator for an electrochemical device of the present invention includes: obtaining a separator forming composition, wherein the separator forming composition contains a resin raw material including a monomer or an oligomer, a solvent (a) capable of dissolving the resin raw material; and a solvent (b) capable of causing the resin raw material to agglomerate by solvent shock, and Vsb/Vsa as a ratio between the volume Vsa of the solvent (a) and the volume Vsb of the solvent (b) is 0.04 to 0.2; applying the composition to a substrate; irradiating with energy rays a coating of the applied composition to form a resin (A) having a crosslinked structure; and drying the coating after the formation of the resin (A) to form pores. The separator for an electrochemical device of the present invention is produced by the production method of the present invention.Type: ApplicationFiled: March 12, 2012Publication date: January 30, 2014Applicant: HITACHI, LTD.Inventors: Eri Kojima, Takahiro Furutani, Toshiyuki Watanabe, Kunihiko Koyama
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Publication number: 20130244116Abstract: 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: ApplicationFiled: February 27, 2013Publication date: September 19, 2013Applicant: HITACHI, LTD.Inventors: Toshiyuki WATANABE, Kunihiko KOYAMA, Takahiro FURUTANI, Eri KOJIMA
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Publication number: 20130224575Abstract: 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/cm2.Type: ApplicationFiled: February 28, 2012Publication date: August 29, 2013Applicant: HITACHI, LTD.Inventors: Eri Kojima, Takahiro Furutani, Mitsuhiro Kishimi
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Publication number: 20130224559Abstract: A separator for a nonaqueous electrolyte secondary battery that at least includes a resin (A) having a crosslinked structure, which is obtained by irradiating with an energy ray an oligomer polymerizable by irradiation with an energy ray. The separator has an average pore size of 0.005 to 0.5 ?m, an air permeability of 50 sec/100 mL or more and less than 500 sec/100 mL, where the air permeability is expressed as a Gurley value, and a thermal shrinkage of less than 2% at 175° C. The separator for a nonaqueous secondary battery can be produced by the production method of the present invention, which includes the steps of: applying to a substrate a separator forming composition containing the oligomer, two or more kinds of solvents having different polarity from each other, and the like; irradiating the applied composition with an energy ray; and drying the energy ray-irradiated composition.Type: ApplicationFiled: February 23, 2012Publication date: August 29, 2013Applicant: HITACHI, LTD.Inventors: Takahiro Furutani, Eri Kojima, Toshiyuki Watanabe, Kunihiko Koyama
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Publication number: 20130084494Abstract: The separator for non-aqueous electrolyte secondary batteries according to the present invention includes at least a resin (A) having a crosslinked structure. The resin having the crosslinked structure is obtained by applying energy rays to at least an oligomer that is capable of being polymerized by irradiation with energy rays, and the resin (A) has a glass transition temperature higher than 0° C. and lower than 80° C. The separator for non-aqueous electrolyte secondary batteries according to the present invention can be produced using a method of the present invention including the steps of applying a separator-forming composition containing an oligomer and a solvent to a base substrate, forming a resin (A) by irradiation with energy rays, and forming pores by drying a coating film after the resin (A) has been formed. Furthermore, the non-aqueous electrolyte secondary battery of the present invention includes the separator for non-aqueous electrolyte secondary batteries according to the present invention.Type: ApplicationFiled: September 29, 2011Publication date: April 4, 2013Inventors: Takahiro Furutani, Eri Kojima, Toshiyuki Watanabe, Kunihiko Koyama
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Publication number: 20130078526Abstract: A production method for producing a separator for an electrochemical device including the steps of: applying, to a base material, a separator forming composition containing a monomer or an oligomer and a solvent; irradiating the thus formed coating with an energy ray to form a resin (A) having a cross-linked structure; and drying the coating after formation of the resin (A) to form pores, wherein, as a solvent of the separator forming composition, a solvent (a) having a solubility parameter (SP value) of 8.1 or more and less than 8.9 is used, or a solvent (b) having an SP value of 7 or more and 8 or less and a solvent (c) having an SP value of 8.9 or more and 9.9 or less are used in combination. A separator for an electrochemical device produced by the production method, and an electrochemical device of the invention including the separator.Type: ApplicationFiled: March 12, 2012Publication date: March 28, 2013Inventors: Eri Kojima, Takahiro Furutani, Toshiyuki Watanabe, Kunihiko Koyama
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Patent number: 7682435Abstract: The present invention relates to an oil-based pigmented ink composition containing at least a pigment, a polymer compound and an organic solvent, which contains, as the organic solvent, methoxybutyl acetate in an amount of 20 to 90% by weight based on the entire ink composition; and particularly to the above oil-based pigmented ink composition, which contains, as the other organic solvent, a nitrogen-containing and/or oxygen-containing heterocyclic compound in an amount of 1 to 50% by weight based on the entire ink composition and/or a (poly)alkylene glycol derivative in an amount of 1 to 50% by weight based on the entire ink composition; and to the above oil-based pigmented ink composition, which has a flash point of 61° C. or higher, a viscosity of 2.0 to 6.5 cp at 25° C., and a surface tension of 20 to 40 mN/m at 25° C.Type: GrantFiled: February 17, 2006Date of Patent: March 23, 2010Assignee: Hitachi Maxell, Ltd.Inventors: Takuo Mizutani, Takahiro Furutani
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Publication number: 20090124731Abstract: An object of the present invention is to provide an oil-based pigmented ink composition which is excellent in ejection property in case of printing using an ink-jet printer and is excellent in drying property and fixing property in case of printing on a low cost printing medium such as a PVC film having no receptive layer, and also can endure outdoor environment.Type: ApplicationFiled: February 17, 2006Publication date: May 14, 2009Inventors: Takuo Mizutani, Takahiro Furutani
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Publication number: 20080234428Abstract: A pigmented ink composition comprising a pigment, a resin having an acidic group and an organic solvent having a boiling point of at least 150° C. which is present in an amount of from 50 to 90% by weight based on the whole weight of the ink composition. When this ink composition is subjected to an printed layer-sliding test in which the ink composition is applied on a cationically treated printing medium with a #4 bar coater (available from TOYO SEIKI KOGYO CO., LTD.) and dried and then the printed surface is slid with a cloth on which a weight of 50 g is placed, the printed record is not grazed. This ink composition contains the pigment with a small dispersion particle size and has good water resistance, can be printed on a plain paper sheet without cockling, and suffers from no grazing of printed records when the ink composition is printed on a cationically treated paper sheet.Type: ApplicationFiled: May 27, 2008Publication date: September 25, 2008Inventors: Takahiro FURUTANI, Nagayuki TAKAO
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Patent number: 7393884Abstract: A pigmented ink composition comprising a pigment, a resin having an acidic group and an organic solvent having a boiling point of at least 150° C. which is present in an amount of from 50 to 90% by weight based on the whole weight of the ink composition. When this ink composition is subjected to an printed layer-sliding test in which the ink composition is applied on a cationically treated printing medium with a #4 bar coater (available from TOYO SEIKI KOGYO CO., LTD.) and dried and then the printed surface is slid with a cloth on which a weight of 50 g is placed, the printed record is not grazed. This ink composition contains the pigment with a small dispersion particle size and has good water resistance, can be printed on a plain paper sheet without cockling, and suffers from no grazing of printed records when the ink composition is printed on a cationically treated paper sheet.Type: GrantFiled: June 20, 2003Date of Patent: July 1, 2008Assignee: Hitachi Maxwell, Ltd.Inventors: Takahiro Furutani, Nagayuki Takao