Patents by Inventor Takuya HOSHIKO
Takuya HOSHIKO 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: 11018361Abstract: To provide a fuel cell stack device that is applicable to miniaturization of the device and does not require a pipe for discharging off-gas up to a combustion section. A fuel cell stack device including: a first manifold 2a for supplying fuel gas supplied from a reformer 12 to a plurality of fuel cells provided in a first cell stack from above, the first manifold being connected to upper ends of the plurality of fuel cells provided in the first cell stack 10a; and a second manifold 2b for recovering fuel gas discharged from the first cell stack, and supplying the recovered fuel gas to the plurality of fuel cells provided in the second cell stack from below, the second manifold being connected to lower ends of the plurality of fuel cells provided in the second cell stack 10b.Type: GrantFiled: November 30, 2017Date of Patent: May 25, 2021Assignee: MORIMURA SOFC TECHNOLOGY CO., LTD.Inventors: Naoki Watanabe, Toshiharu Otsuka, Akira Kawakami, Fumio Tsuboi, Takuya Matsuo, Takuya Hoshiko, Shuhei Tanaka
-
Patent number: 10044049Abstract: To provide SOFC and method for manufacturing same, capable of preventing breakage of fuel cell electrodes, and of securing an electrical connection between fuel cells and a current collector. SOFC 1 comprising a cell array composed of fuel cells 16, and current collector 82 connected to electrodes formed on fuel cells 16, wherein current collector 82 is a metal plate on which attaching holes 84 are formed; elastic pieces 84a are provided on each attaching hole 84; current collector 82 is attached to the cell array using elastic pieces 84a, by the insertion of fuel cell 16 into attaching holes 84; and elastic pieces 84a are affixed to fuel cells 16 by electrode protective layer 152 so that the positions of elastic pieces 84a are not displaced relative to the electrodes on fuel cells 16.Type: GrantFiled: March 6, 2015Date of Patent: August 7, 2018Assignee: TOTO LTD.Inventors: Shuhei Tanaka, Naoki Watanabe, Nobuo Isaka, Masaki Sato, Takuya Hoshiko, Osamu Okamoto, Shigeru Ando, Seiki Furuya, Yutaka Momiyama, Yasuo Kakinuma, Kiyoshi Hayama
-
Publication number: 20180219242Abstract: A solid oxide fuel cell array has pairs of a first connection member and a second connection member. Each pair electrically connects two adjacent first and second fuel cells to electrically connect the plurality of fuel cells in series. The second fuel cell has the first connection member connected to the outer side electrode layer of the second fuel cell at a distance D1 measured from the upper terminal end of the outer side electrode layer of the second fuel cell and has the second connection member connected to the outside side electrode layer of the second fuel cell at a distance D2 measured from the lower terminal end of the outer side electrode of the second fuel cell. The distance D2 is longer than the distance D1.Type: ApplicationFiled: January 30, 2018Publication date: August 2, 2018Inventors: Naoki WATANABE, Takuya HOSHIKO, Masaru KUBOTA, Hajime OMURA
-
Patent number: 10003088Abstract: A solid oxide fuel cell stack includes a support, a plurality of power generation elements provided on a surface of the support, the plurality of power generation elements connected in series, each including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order, and an interconnector that electrically connects an air electrode in one of adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte in adjacent one power generation element is provided between a fuel electrode in the adjacent one power generation element and the fuel electrode in the adjacent other power generation element, and an insulating member is provided at a position that is on the solid electrolyte in the adjacent one power generation element and between the air electrode in the adjacent one power generation element and the solid electrolyte therein.Type: GrantFiled: September 29, 2015Date of Patent: June 19, 2018Assignee: Toto Ltd.Inventors: Yasuo Kakinuma, Osamu Okamoto, Shigeru Ando, Hironobu Murakami, Seiki Furuya, Yutaka Momiyama, Kiyoshi Hayama, Naoki Watanabe, Shuhei Tanaka, Nobuo Isaka, Takuya Hoshiko, Masaki Sato
-
Publication number: 20180159156Abstract: To provide a fuel cell stack device that is applicable to miniaturization of the device and does not require a pipe for discharging off-gas up to a combustion section. A fuel cell stack device including: a first manifold 2a for supplying fuel gas supplied from a reformer 12 to a plurality of fuel cells provided in a first cell stack from above, the first manifold being connected to upper ends of the plurality of fuel cells provided in the first cell stack 10a; and a second manifold 2b for recovering fuel gas discharged from the first cell stack, and supplying the recovered fuel gas to the plurality of fuel cells provided in the second cell stack from below, the second manifold being connected to lower ends of the plurality of fuel cells provided in the second cell stack 10b.Type: ApplicationFiled: November 30, 2017Publication date: June 7, 2018Inventors: Naoki WATANABE, Toshiharu OTSUKA, Akira KAWAKAMI, Fumio TSUBOI, Takuya MATSUO, Takuya HOSHIKO, Shuhei TANAKA
-
Patent number: 9871265Abstract: To provide a method for manufacturing SOFC, capable of preventing breakage of fuel cell electrodes, and of securing an electrical connection between fuel cells and a current collector. Step for forming electrode protective layers 152 on electrodes formed on fuel cells 16, modularization step for forming a cell array, and attaching step for attaching a current collector 82 to the cell array, wherein current collector 82 is a metal plate on which attaching holes 84 are formed for the insertion of fuel cells 16, elastic pieces 84a are formed at each attaching hole 84, fuel cells 16 are inserted into attaching holes 84, and current collector 82 is attached to the cell array by the elastic force; and protective layer 152 is constituted to prevent damage to electrodes caused by contact with elastic pieces.Type: GrantFiled: March 6, 2015Date of Patent: January 16, 2018Assignee: TOTO LTD.Inventors: Shuhei Tanaka, Naoki Watanabe, Nobuo Isaka, Masaki Sato, Takuya Hoshiko, Yutaka Momiyama, Shigeru Ando, Osamu Okamoto, Kiyoshi Hayama, Seiki Furuya, Yasuo Kakinuma
-
Patent number: 9780391Abstract: To provide a fuel cell device capable of extending the years of service life of a reformer by suppressing thermal runaways. The present invention is a solid oxide fuel cell device, including a fuel cell module having fuel cell units; a reformer disposed above the fuel cell units, for producing hydrogen by a partial oxidation reforming reaction and a steam reforming reaction; a vaporizing chamber disposed adjacent to the reformer; a combustion chamber for heating the vaporization chamber; a water supply device; an electrical generation oxidant gas supply device; and a controller for raising the fuel cell units to a temperature at which electrical generation is possible; whereby over the entire period of the startup step, the reforming oxidant gas supply device and water supply device are controlled so that partial oxidation reforming reactions do not occur independently in the reformer.Type: GrantFiled: July 17, 2013Date of Patent: October 3, 2017Assignee: TOTO LTD.Inventors: Yousuke Akagi, Toshiya Abe, Toshiharu Otsuka, Katsuhisa Tsuchiya, Takuya Matsuo, Naoki Watanabe, Hajime Omura, Shuhei Tanaka, Takuya Hoshiko
-
Patent number: 9755249Abstract: A solid oxide fuel cell stack includes a support, a plurality of power generation elements connected in series, each including a fuel electrode, a solid electrolyte, and an air electrode stacked in that order on the support, and an interconnector electrically connecting an air electrode in one of the two adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte for one of the power generation elements is provided on the downside of the interconnector provided on the downside of the air electrode in the one power generation element so that the solid electrolyte is joined to the interconnector, and a solid electrolyte for the other power generation element is provided on the upper side of the interconnector provided on the upper side of the fuel electrode for the other power generation element so that the solid electrolyte is joined to the interconnector.Type: GrantFiled: September 29, 2015Date of Patent: September 5, 2017Assignee: Toto Ltd.Inventors: Yasuo Kakinuma, Osamu Okamoto, Shigeru Ando, Hironobu Murakami, Seiki Furuya, Yutaka Momiyama, Kiyoshi Hayama, Naoki Watanabe, Shuhei Tanaka, Nobuo Isaka, Takuya Hoshiko, Masaki Sato
-
Patent number: 9583773Abstract: Provided is a solid oxide fuel cell unit comprising an insulating support, and a power generation element comprising, at least, a fuel electrode, an electrolyte and an air electrode, which are sequentially laminated one another, the power generation element being provided on the insulating support, wherein an exposed insulating support portion, an exposed fuel electrode portion, and an exposed electrolyte portion are provided in an fuel electrode cell end portion.Type: GrantFiled: July 2, 2014Date of Patent: February 28, 2017Assignee: TOTO LTD.Inventors: Shigeru Ando, Naoki Watanabe, Takuya Hoshiko, Shuhei Tanaka, Masaki Sato, Nobuo Isaka, Yutaka Momiyama, Seiki Furuya, Kiyoshi Hayama, Yasuo Kakinuma, Osamu Okamoto
-
Patent number: 9543608Abstract: The present invention provides a novel manufacturing method for a solid oxide fuel cell apparatus in which members of the apparatus are joined together with an adhesive, such as a ceramic adhesive. The method implements first and second types of drying and hardening steps. The first type of step may be called a workable hardening step and gives an assembly of members in the solid oxide fuel cell apparatus structural rigidity to go through assembling of the solid oxide fuel cell apparatus. The second type of step may be called a solvent elimination and hardening step and gives the assembled members property to withstand the operation temperature of the solid fuel oxide cell apparatus. The first type of step is performed at a first temperature lower than a second temperature at which the second type of step is performed. The second type of step is performed only after the first type of step is performed at multiple times.Type: GrantFiled: June 23, 2014Date of Patent: January 10, 2017Assignee: TOTO LTD.Inventors: Nobuo Isaka, Naoki Watanabe, Shuhei Tanaka, Takuya Hoshiko, Masaki Sato, Osamu Okamoto, Shigeru Ando, Seiki Furuya, Yutaka Momiyama, Kiyoshi Hayama
-
Patent number: 9478811Abstract: Provided is a solid oxide fuel cell which includes a fuel electrode, a solid electrolyte, and an air electrode, each being sequentially laminated on the surface of a porous support. The porous support comprises forsterite and a nickel element. Ni and/or NiO fine particles are exposed on a surface of a sintered compact of the forsterite constituting the porous support.Type: GrantFiled: March 28, 2014Date of Patent: October 25, 2016Assignee: TOTO LTD.Inventors: Shigeru Ando, Osamu Okamoto, Kiyoshi Hayama, Seiki Furuya, Yutaka Momiyama, Nobuo Isaka, Masaki Sato, Shuhei Tanaka, Takuya Hoshiko, Naoki Watanabe, Yasuo Kakinuma
-
Patent number: 9461327Abstract: Disclosed is a solid oxide fuel cell which includes an inner electrode, a solid electrolyte, and an outer electrode, each being sequentially laminated on the surface of a porous support. The porous support contains forsterite, and further has a strontium element concentration of 0.02 mass % to 1 mass % both inclusive in terms of SrO based on the mass of the forsterite.Type: GrantFiled: March 28, 2014Date of Patent: October 4, 2016Assignee: TOTO LTD.Inventors: Shigeru Ando, Osamu Okamoto, Kiyoshi Hayama, Seiki Furuya, Yutaka Momiyama, Nobuo Isaka, Masaki Sato, Shuhei Tanaka, Takuya Hoshiko, Naoki Watanabe, Yasuo Kakinuma
-
Publication number: 20160133977Abstract: To provide a solid oxide fuel cell with improved durability while obtaining sufficient electricity generating performance. The present invention is a method for manufacturing solid oxide fuel cells (16) in which electricity generating elements (16a) are connected by an interconnector (102), including: a support body forming step (S1); surface deposition steps (S4, S9) for forming in sequence a first and second functional layer on a porous support body; an outermost layer deposition step (S13) for forming an outermost functional layer (101) in which slurry in liquid droplet form is continuously jetted to form dots, and an outermost functional layer is formed by the agglomeration of dots to be thicker than a first functional layer (98); and a sintering step (S14) for sintering functional layers; wherein in the outermost functional layer, traces of agglomerated dots remain and ring-shaped cracks surrounding each dot trace are formed by the sintering process.Type: ApplicationFiled: November 10, 2015Publication date: May 12, 2016Inventors: Seiki FURUYA, Shigeru ANDO, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Osamu OKAMOTO, Naoki WATANABE, Nobuo ISAKA, Masaki SATO, Yasuo KAKINUMA, Shuhei TANAKA, Hironobu MURAKAMI, Takuya HOSHIKO
-
Publication number: 20160133980Abstract: To provide a method of manufacturing a solid oxide fuel cell, capable of obtaining a uniform film thickness. The present invention is a method of manufacturing fuel cells (16), including a support body-forming step (S1) for forming a porous support body (97), a film deposition step for laminating functional layers constituting electricity generating elements on a support body; and a sintering step (S14, S16) for sintering the support body on which functional layers are formed; whereby the film deposition step includes surface deposition steps (S5, S11), in which a masking layer is formed in parts not requiring film deposition, and electricity generating elements first functional layers are simultaneously formed, and a dot deposition step (S15), in which slurry dots are formed by placing a slurry into a liquid droplet state and jetting it, and a second functional layer is formed by the agglomeration of these dots.Type: ApplicationFiled: November 10, 2015Publication date: May 12, 2016Inventors: Seiki FURUYA, Shigeru ANDO, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Osamu OKAMOTO, Naoki WATANABE, Nobuo ISAKA, Masaki SATO, Yasuo KAKINUMA, Shuhei TANAKA, Hironobu MURAKAMI, Takuya HOSHIKO, Masaru KUBOTA, Shinji SHINOHARA
-
Publication number: 20160093910Abstract: There is provided a solid oxide fuel cell stack including a ceramic interconnector that has good electrical conductivity and oxide ion insulating property, that is, power generation efficiency. The solid oxide fuel cell stack includes at least: a plurality of power generation elements, each of which including a fuel electrode, a solid electrolyte, and an air electrode stacked in that order; and an interconnector that electrically connects the air electrode in one of adjacent power generation elements in the plurality of power generation elements to the fuel electrode in the other power generation element, the plurality of power generation elements being connected in series, wherein the interconnector is formed of formula (1): SraLabTi1-c-dNbcFedO3-???formula (1) wherein a, b, c, and d are a positive real number that satisfies 0.1?a?0.8, 0.1?b?0.8, 0.05?c?0.2, and 0.2?d?0.5.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Inventors: Yasuo KAKINUMA, Osamu OKAMOTO, Shigeru ANDO, Hironobu MURAKAMI, Seiki FURUYA, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Naoki WATANABE, Shuhei TANAKA, Nobuo ISAKA, Takuya HOSHIKO, Masaki SATO
-
Publication number: 20160093896Abstract: A solid oxide fuel cell stack includes a support, a plurality of power generation elements connected in series, each including a fuel electrode, a solid electrolyte, and an air electrode stacked in that order on the support, and an interconnector electrically connecting an air electrode in one of the two adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte for one of the power generation elements is provided on the downside of the interconnector provided on the downside of the air electrode in the one power generation element so that the solid electrolyte is joined to the interconnector, and a solid electrolyte for the other power generation element is provided on the upper side of the interconnector provided on the upper side of the fuel electrode for the other power generation element so that the solid electrolyte is joined to the interconnector.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Inventors: Yasuo KAKINUMA, Osamu OKAMOTO, Shigeru ANDO, Hironobu MURAKAMI, Seiki FURUYA, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Naoki WATANABE, Shuhei TANAKA, Nobuo ISAKA, Takuya HOSHIKO, Masaki SATO
-
Publication number: 20160093909Abstract: There is provided a solid oxide fuel cell stack including an interconnector that has excellent electrical conductivity, gas sealing property, and adhesion to a solid electrolyte. The solid oxide fuel cell stack includes a plurality of power generation elements, each of which including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order; and an interconnector that electrically connects the air electrode in one of adjacent power generation elements in the plurality of the power generation elements to the fuel electrode in the other power generation element, the plurality of power generation elements being connected in series to each other, wherein an intermediate layer having a porosity of not more than 1% and an electrical conductivity of not less than 0.05 S/cm is provided between the interconnector and the fuel electrode in the other power generation element.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Inventors: Yasuo KAKINUMA, Osamu OKAMOTO, Shigeru ANDO, Hironobu MURAKAMI, Seiki FURUYA, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Naoki WATANABE, Shuhei TANAKA, Nobuo ISAKA, Takuya HOSHIKO, Masaki SATO
-
Publication number: 20160093897Abstract: A solid oxide fuel cell stack includes a support, a plurality of power generation elements provided on a surface of the support, the plurality of power generation elements connected in series, each including at least a fuel electrode, a solid electrolyte, and an air electrode stacked in that order, and an interconnector that electrically connects an air electrode in one of adjacent power generation elements to a fuel electrode in the other power generation element. A solid electrolyte in adjacent one power generation element is provided between a fuel electrode in the adjacent one power generation element and the fuel electrode in the adjacent other power generation element, and an insulating member is provided at a position that is on the solid electrolyte in the adjacent one power generation element and between the air electrode in the adjacent one power generation element and the solid electrolyte therein.Type: ApplicationFiled: September 29, 2015Publication date: March 31, 2016Inventors: Yasuo KAKINUMA, Osamu OKAMOTO, Shigeru ANDO, Hironobu MURAKAMI, Seiki FURUYA, Yutaka MOMIYAMA, Kiyoshi HAYAMA, Naoki WATANABE, Shuhei TANAKA, Nobuo ISAKA, Takuya HOSHIKO, Masaki SATO
-
Publication number: 20150255805Abstract: To provide SOFC and method for manufacturing same, capable of preventing breakage of fuel cell electrodes, and of securing an electrical connection between fuel cells and a current collector. SOFC 1 comprising a cell array composed of fuel cells 16, and current collector 82 connected to electrodes formed on fuel cells 16, wherein current collector 82 is a metal plate on which attaching holes 84 are formed; elastic pieces 84a are provided on each attaching hole 84; current collector 82 is attached to the cell array using elastic pieces 84a, by the insertion of fuel cell 16 into attaching holes 84; and elastic pieces 84a are affixed to fuel cells 16 by electrode protective layer 152 so that the positions of elastic pieces 84a are not displaced relative to the electrodes on fuel cells 16.Type: ApplicationFiled: March 6, 2015Publication date: September 10, 2015Inventors: Shuhei TANAKA, Naoki WATANABE, Nobuo ISAKA, Masaki SATO, Takuya HOSHIKO, Osamu OKAMOTO, Shigeru ANDO, Seiki FURUYA, Yutaka MOMIYAMA, Yasuo KAKINUMA, Kiyoshi HAYAMA
-
Publication number: 20150255825Abstract: To provide a method for manufacturing SOFC, capable of preventing breakage of fuel cell electrodes, and of securing an electrical connection between fuel cells and a current collector. Step for forming electrode protective layers 152 on electrodes formed on fuel cells 16, modularization step for forming a cell array, and attaching step for attaching a current collector 82 to the cell array, wherein current collector 82 is a metal plate on which attaching holes 84 are formed for the insertion of fuel cells 16, elastic pieces 84a are formed at each attaching hole 84, fuel cells 16 are inserted into attaching holes 84, and current collector 82 is attached to the cell array by the elastic force; and protective layer 152 is constituted to prevent damage to electrodes caused by contact with elastic pieces.Type: ApplicationFiled: March 6, 2015Publication date: September 10, 2015Inventors: Shuhei TANAKA, Naoki WATANABE, Nobuo ISAKA, Masaki SATO, Takuya HOSHIKO, Yutaka MOMIYAMA, Shigeru ANDO, Osamu OKAMOTO, Kiyoshi HAYAMA, Seiki FURUYA, Yasuo KAKINUMA