Patents by Inventor Etsuya Ikeda
Etsuya Ikeda 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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Single cell with metal plate, fuel cell stack, and method for producing single cell with metal plate
Patent number: 10186715Abstract: A metal plate-bonded single fuel cell unit according to one aspect of the present invention includes a single cell element having a solid electrolyte and fuel and air electrodes disposed on opposite sides of the solid electrolyte and a metal plate bonded by a brazing material to the single cell element. The metal plate contains Ti and Al and has an Al—Ti-containing oxide layer present on a surface of the metal plate, an Al oxide film present on a surface of the Al—Ti-containing oxide layer and a Ti-containing phase apart from a part of a surface of the Al oxide film in contact with the brazing material while being present on a remaining part of the surface of the Al oxide film. The metal plate-bonded single fuel cell unit has a Ti reaction phase formed at an interface between the solid electrolyte and the brazing material.Type: GrantFiled: December 17, 2014Date of Patent: January 22, 2019Assignee: NGK SPARK PLUG CO., LTD.Inventors: Yasuo Okuyama, Makoto Kuribayashi, Etsuya Ikeda -
Patent number: 10164286Abstract: A separator-fitted single fuel cell having a single fuel cell, a plate-shaped metallic separator that includes a through hole, and a joint portion that joins the single fuel cell to the metallic separator and is made of a brazing material containing Ag. The joint portion includes a protruding portion that protrudes from a gap between the single fuel cell and the first main surface of the metallic separator toward the through hole. The protruding portion is lower than the second main surface as viewed from the single fuel cell. The single fuel cell includes a sealing portion that is disposed along the entire circumference of the through hole of the metallic separator, covers the protruding portion and a part of the second main surface, and is made of a sealing material containing glass.Type: GrantFiled: October 23, 2014Date of Patent: December 25, 2018Assignee: NGK SPARK PLUG CO., LTD.Inventors: Makoto Kuribayashi, Yasuo Okuyama, Etsuya Ikeda
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Patent number: 10122023Abstract: A fuel cell with separator includes a fuel cell body having a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode; a plate-like metal separator having first and second main surfaces and an opening which opens at the first and second main surfaces; a joint formed of an Ag-containing brazing filler metal and adapted to join the fuel cell body and the first main surface of the metal separator; and a seal formed of a glass-containing sealing material and disposed closer to the opening than is the joint, the seal being located between the first main surface and the fuel cell body and extending along the entire perimeter of the opening.Type: GrantFiled: August 26, 2013Date of Patent: November 6, 2018Assignee: NGK SPARK PLUG CO., LTD.Inventors: Makoto Kuribayashi, Etsuya Ikeda, Wataru Matsutani, Yosuke Yatsuya, Masaaki Murase
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Patent number: 9728797Abstract: A fuel battery and a fuel cell stack, the fuel battery including: a fuel cell that generates electric power through a power generating reaction of reactant gases and includes a solid electrolyte layer having a first main surface and a second main surface, a first electrode disposed on the first main surface and serving as one of a cathode and an anode, and a second electrode disposed on the second main surface and serving as the other one of the cathode and the anode; an interconnector disposed so as to face the first electrode; and a current collecting member that electrically connects the first electrode to the interconnector. The first electrode includes: an inner portion connected to the current collecting member; and an outer portion disposed outward of the current collecting member and having a height larger than the height of the inner portion.Type: GrantFiled: September 8, 2014Date of Patent: August 8, 2017Assignee: NGK SPARK PLUG CO., LTD.Inventors: Makoto Kuribayashi, Hayato Katsuda, Etsuya Ikeda
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SINGLE CELL WITH METAL PLATE, FUEL CELL STACK, AND METHOD FOR PRODUCING SINGLE CELL WITH METAL PLATE
Publication number: 20160359175Abstract: A metal plate-bonded single fuel cell unit according to one aspect of the present invention includes a single cell element having a solid electrolyte and fuel and air electrodes disposed on opposite sides of the solid electrolyte and a metal plate bonded by a brazing material to the single cell element. The metal plate contains Ti and Al and has an Al-Ti-containing oxide layer present on a surface of the metal plate, an Al oxide film present on a surface of the Al-Ti-containing oxide layer and a Ti-containing phase apart from a part of a surface of the Al oxide film in contact with the brazing material while being present on a remaining part of the surface of the Al oxide film. The metal plate-bonded single fuel cell unit has a Ti reaction phase formed at an interface between the solid electrolyte and the brazing material.Type: ApplicationFiled: December 17, 2014Publication date: December 8, 2016Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yasuo OKUYAMA, Makoto KURIBAYASHI, Etsuya IKEDA -
Publication number: 20160276680Abstract: A separator-fitted single fuel cell having a single fuel cell, a plate-shaped metallic separator that includes a through hole, and a joint portion that joins the single fuel cell to the metallic separator and is made of a brazing material containing Ag. The joint portion includes a protruding portion that protrudes from a gap between the single fuel cell and the first main surface of the metallic separator toward the through hole. The protruding portion is lower than the second main surface as viewed from the single fuel cell. The single fuel cell includes a sealing portion that is disposed along the entire circumference of the through hole of the metallic separator, covers the protruding portion and a part of the second main surface, and is made of a sealing material containing glass.Type: ApplicationFiled: October 23, 2014Publication date: September 22, 2016Applicant: NGK SPARK PLUG CO., LTD.Inventors: Makoto KURIBAYASHI, Yasuo OKUYAMA, Etsuya IKEDA
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Publication number: 20160226085Abstract: A fuel battery and a fuel cell stack, the fuel battery including: a fuel cell that generates electric power through a power generating reaction of reactant gases and includes a solid electrolyte layer having a first main surface and a second main surface, a first electrode disposed on the first main surface and serving as one of a cathode and an anode, and a second electrode disposed on the second main surface and serving as the other one of the cathode and the anode; an interconnector disposed so as to face the first electrode; and a current collecting member that electrically connects the first electrode to the interconnector. The first electrode includes: an inner portion connected to the current collecting member; and an outer portion disposed outward of the current collecting member and having a height larger than the height of the inner portion.Type: ApplicationFiled: September 8, 2014Publication date: August 4, 2016Applicant: NGK SPARK PLUG CO., LTD.Inventors: Makoto KURIBAYASHI, Hayato KATSUDA, Etsuya IKEDA
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Publication number: 20150318563Abstract: A fuel cell with separator includes a fuel cell body having a cathode, an anode, and a solid electrolyte layer disposed between the cathode and the anode; a plate-like metal separator having first and second main surfaces and an opening which opens at the first and second main surfaces; a joint formed of an Ag-containing brazing filler metal and adapted to join the fuel cell body and the first main surface of the metal separator; and a seal formed of a glass-containing sealing material and disposed closer to the opening than is the joint, the seal being located between the first main surface and the fuel cell body and extending along the entire perimeter of the opening.Type: ApplicationFiled: August 26, 2013Publication date: November 5, 2015Applicant: NGK SPARK PLUG CO., LTD.Inventors: Makoto KURIBAYASHI, Etsuya IKEDA, Wataru MATSUTANI, Yosuke YATSUYA, Masaaki MURASE
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Patent number: 7875832Abstract: A ceramic heater, heat exchange unit, and warm water washing toilet seat are provided having excellent temperature rise characteristics and a shortened heating time to reach a predetermined water temperature. A ceramic heater having a pattern watt density of 50 W/cm2 and above, and a surface watt density of 25 W/cm2 and above has a short start-up time and excellent temperature rise characteristics. Further, the thickness of a core is reduced to between 0.5 mm and 1.9 mm (circular tube thickness is between 1 mm and 2.4 mm), which enables efficient transfer of heat from the ceramic heater to water flowing in the circular tube. Accordingly, a gap between a heat exchanger and the ceramic heater is not necessarily narrowed, such that air bubbles are not likely trapped and breakage of the ceramic heater by thermal shock can be suppressed.Type: GrantFiled: December 20, 2005Date of Patent: January 25, 2011Assignee: NGK Spark Plug Co., Ltd.Inventors: Etsuya Ikeda, Katsuhiko Horii
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Publication number: 20090020518Abstract: A ceramic heater, a heat exchange unit, and a warm water washing toilet seat are provided which have excellent temperature rise characteristics and can reduce the time required to reach a predetermined water temperature. A ceramic heater (5) has a pattern watt density of 50 W/cm2 and above, and a surface watt density of 25 W/cm2 and above. Accordingly, the ceramic heater (5) has a short start-up time and excellent temperature rise characteristics. Further, the thickness of a core is reduced to between 0.5 mm and 1.9 mm (accordingly, circular tube thickness is between 1 mm and 2.4 mm), and this enables heat from the ceramic heater (5) can be efficiently transmitted to water that flows in the circular tube, making the ceramic heater (5) excellent in temperature rise characteristics. Accordingly, a gap between a heat exchanger (3) and the ceramic heater (5) is not necessary to be excessively narrowed.Type: ApplicationFiled: December 20, 2005Publication date: January 22, 2009Applicant: NGK SPARK PLUG CO., LTD.Inventors: Etsuya Ikeda, Katsuhiko Horii