Patents by Inventor Tatsuya Yaguchi
Tatsuya Yaguchi 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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Patent number: 9581125Abstract: In an ignition device of an internal combustion engine which carries out ignition of an air-fuel mixture by repeatedly applying a voltage across electrodes of an ignition plug thereby producing a plurality of discharges, an improvement is proposed in which in the presence of gas flow of which direction is perpendicular to a direction that connects the electrodes with a shortest distance, a time interval between n-th time discharge and (n?1)-th time discharge is so set that a discharge channel caused or proposed by the n-th time discharge is more extended in the gas flow direction than a discharge channel caused by the (n?1)-th time discharge.Type: GrantFiled: August 14, 2012Date of Patent: February 28, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Tatsuya Yaguchi, Taisuke Shiraishi
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Publication number: 20160341172Abstract: An ignition device for an internal combustion engine (1) includes a superpose voltage generation circuit (47) that, after the initiation of a discharge with the application of a discharge voltage by a secondary coil, applies a superpose voltage between electrodes of an ignition plug (29) in the same direction as the discharge voltage to continue a discharge current, and performs a superposed discharge in a superposed discharge activation range of high exhaust recirculation rate. Upon shift from the superposed discharge activation range of high exhaust recirculation rate to a superposed discharge deactivation range of low exhaust recirculation rate, the deactivation of the superposed discharge is delayed by a delay time ?T. Although the exhaust gas recirculation rate becomes temporarily increased with decrease in intake air after the closing of an exhaust gas recirculation control valve, the superposed discharge is continued for the delay time ?T so as to avoid misfiring.Type: ApplicationFiled: December 16, 2013Publication date: November 24, 2016Applicant: NISSAN MOTOR CO., LTD.Inventors: Taisuke Shiraishi, Tatsuya Yaguchi, Hirofumi Maeda
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Patent number: 9406949Abstract: A fuel cell system is provided with a fuel cell, a first combustor, a first heating gas return channel and a gas supplier. The fuel cell includes a solid electrolyte cell with an anode and a cathode. The fuel cell generates power by reacting a hydrogen-containing gas and an oxygen-containing gas. The first combustor selectively supplies a heating gas to the cathode of the fuel cell. The first heating gas return channel mixes at least some exhaust gas discharged from the cathode with the heating gas of the first combustor such that a mixed heating gas of the exhaust gas and the heating gas is supplied to the cathode. The gas supplier connected to the first heating gas return channel for supplying the exhaust gas from the cathode to mix with the heating gas of the first combustor.Type: GrantFiled: July 2, 2010Date of Patent: August 2, 2016Assignee: Nissan Motor Co., Ltd.Inventors: Kazufumi Takeuchi, Tatsuya Yaguchi
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Patent number: 9333265Abstract: Provided is an organic-inorganic hybrid composite of a polymerized cyclic nitroxide radical compound and inorganic nanoparticles. Such a composite is capable, for example, of maintaining a stable nanoparticle shape in gastric fluid, and can be used by itself or as a carrier for delivery of another drug to the intestines.Type: GrantFiled: February 6, 2013Date of Patent: May 10, 2016Assignees: UNIVERSITY OF TSUKUBA, TSUKUBA UNIVERSITY OF TECHNOLOGYInventors: Yukio Nagasaki, Yutaka Ikeda, Toru Yoshitomi, Tatsuya Yaguchi, Mayo Yamashita, Md. Amran Hossain, Tomoki Yoshinari, Atsushi Ueda, Aki Hirayama
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Publication number: 20150221961Abstract: A fuel cell system includes a fuel cell, a first combustor, a second combustor, a first heating gas return channel, a second heating gas return channel and a gas supplier. The fuel cell includes a solid electrolyte cell with an anode and a cathode. The first combustor supplies a heating gas to the cathode. The second combustor supplies a heating gas to the anode. The first heating gas return channel is arranged to mix at least some exhaust gas discharged from the cathode with the heating gas from the first combustor. The second heating gas return channel is arranged to mix at least some exhaust gas discharged from the cathode with the heating gas from the second combustor. The gas supplier is connected to the first heating gas return channel for supplying the exhaust gas from the cathode to mix with the heating gas of the first combustor.Type: ApplicationFiled: April 13, 2015Publication date: August 6, 2015Inventors: Kazufumi TAKEUCHI, Tatsuya YAGUCHI
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Publication number: 20150118310Abstract: Provided is an organic-inorganic hybrid composite of a polymerized cyclic nitroxide radical compound and inorganic nanoparticles. Such a composite is capable, for example, of maintaining a stable nanoparticle shape in gastric fluid, and can be used by itself or as a carrier for delivery of another drug to the intestines.Type: ApplicationFiled: February 6, 2013Publication date: April 30, 2015Inventors: Yukio Nagasaki, Yutaka Ikeda, Toru Yoshitomi, Tatsuya Yaguchi, Mayo Yamashita, Md. Amran Hossain, Tomoki Yoshinari, Atsushi Ueda, Aki Hirayama
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Publication number: 20140238347Abstract: In an ignition device of an internal combustion engine which carries out ignition of an air-fuel mixture by repeatedly applying a voltage across electrodes of an ignition plug thereby producing a plurality of discharges, an improvement is proposed in which in the presence of gas flow of which direction is perpendicular to a direction that connects the electrodes with a shortest distance, a time interval between n-th time discharge and (n?1)-th time discharge is so set that a discharge channel caused or proposed by the n-th time discharge is more extended in the gas flow direction than a discharge channel caused by the (n?1)-th time discharge.Type: ApplicationFiled: August 14, 2012Publication date: August 28, 2014Applicant: NISSAN MOTOR CO., LTD.Inventors: Tatsuya Yaguchi, Taisuke Shiraishi
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Patent number: 8815461Abstract: A solid electrolyte fuel cell system includes a reformer to produce a hydrogen-rich reformed gas from fuel, oxygen and water, and a stack structure including a stack of fuel cell units each receiving supply of the reformed gas and air, and producing electricity. The fuel cell system further includes a reformed gas cooler to cool the reformed gas supplied from the reformer to the stack structure, and a temperature control section to control operation of the reformed gas cooler in accordance with an operating condition such as a request output of the stack structure. The reformed gas cooler includes a device such as a heat exchanger for cooling the reformed gas with a coolant such as air.Type: GrantFiled: November 28, 2008Date of Patent: August 26, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Kazufumi Takeuchi, Hiromichi Miwa, Masaharu Hatano, Keiko Kushibiki, Tatsuya Yaguchi
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Patent number: 8580452Abstract: A fuel cell apparatus (A1) includes a stack structure (B) including a plurality of solid electrolyte cell units (10) stacked with interspaces separating one another, and a case (20) enclosing the stack structure (B). The fuel cell apparatus (A1) further includes an inlet port (30) to introduce a reactant gas into the case (20), an outlet port (40) to discharge the reactant gas from the case (20), and a gas guide extending from the inlet port (30) along an outer periphery of the stack structure (B). The gas guide may include at least one guide member (50), and a heat transfer section.Type: GrantFiled: October 28, 2008Date of Patent: November 12, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Tatsuya Yaguchi, Keiko Kushibiki, Yasushi Nakajima, Shigeo Ibuka, Kenji Ohara
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Patent number: 8535846Abstract: A fuel cell includes a stack structure composed of fuel cell units with current collectors between the fuel cell units, a casing housing the stack structure, and a gas flow-regulating member provided in a gap between the casing and the stack structure. The fuel cell unit includes: a cell plate which holds at least one cell and has a gas introduction hole for one of fuel gas and air; and a separator plate which has a gas introduction hole for the one of the fuel gas and the air. The casing introduces the other of the fuel gas and the air via a gas introduction portion and flows the other gas to a gas discharge portion. The gas flow-regulating member guides the other gas to the gas discharge portion through the current collectors.Type: GrantFiled: November 21, 2006Date of Patent: September 17, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Keiko Kushibiki, Tatsuya Yaguchi, Shigeo Ibuka, Hirokazu Komatsu, Yasushi Nakajima
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Patent number: 8377604Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.Type: GrantFiled: July 12, 2012Date of Patent: February 19, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Yasushi Nakajima, Tatsuya Yaguchi, Hiroki Sakamoto, Yu Owada, Hiroshi Sakurai, Yoshiteru Yasuda
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Publication number: 20120282538Abstract: A fuel cell stack structure is basically provided with a stack entity and at least one tie rod. The stack entity includes a plurality of solid electrolyte fuel cell units stacked together in a stacking direction. The tie rod extends through the stack entity to fasten the solid electrolyte fuel cell units so that the solid electrolyte fuel cell units are pressed against each other in the stacking direction. The tie rod has an outer cylinder, an inner shaft fitting into the outer cylinder, and a joining material disposed between the outer cylinder and the inner shaft. The joining material fastens the outer cylinder and the inner shaft together in an axial direction of the tie rod and is configured and arranged to maintain a cured state at an operating temperature.Type: ApplicationFiled: July 12, 2012Publication date: November 8, 2012Applicant: NISSAN MOTOR CO., LTD.Inventors: Yasushi NAKAJIMA, Tatsuya YAGUCHI, Hiroki SAKAMOTO, Yu OWADA, Hiroshi SAKURAI, Yoshiteru YASUDA
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Patent number: 8304126Abstract: A fuel cell (A1) includes a cell stack (B) and a casing (210) for housing the cell stack (B), and is supplied with two reactant gases flowing separately from each other. The cell stack (B) includes a plurality of solid electrolyte fuel cell units (200) stacked on one another with inter-unit spaces provided therebetween. One of the reactant gases is supplied to the inter-unit spaces and used for power generation. The casing (210) includes a peripheral wall (222) surrounding the cell stack (B). The peripheral wall (222) is provided with at least one gas inlet opening (223) for introducing the one of the reactant gases into the inter-unit spaces and at least one gas outlet opening (224) for discharging the introduced reactant gas, wherein total opening width dimension of the gas inlet opening (223) is greater than total opening width dimension of the gas outlet opening (224).Type: GrantFiled: January 31, 2008Date of Patent: November 6, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Tatsuya Yaguchi, Yasushi Nakajima, Keiko Kushibiki, Shigeo Ibuka, Hirokazu Komatsu
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Patent number: 8168346Abstract: Solid oxide fuel cells each include a circular cell plate holding single cells as a solid oxide fuel cells and having a gas introducing opening and a gas exhausting opening in a central section. A circular separator plate has a gas introducing opening and a gas exhausting opening in a central section. Sealing members allow the gas intruding openings of the cell plate and the separator plate to airtightly communicate with each other and allow the gas exhausting openings of the cell plate and the separator plate to airtightly communicate with each other.Type: GrantFiled: October 26, 2006Date of Patent: May 1, 2012Assignee: Nissan Motor Co., Ltd.Inventors: Keiko Kushibiki, Yasushi Nakajima, Shigeo Ibuka, Hirokazu Komatsu, Tatsuya Yaguchi
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Publication number: 20120064422Abstract: A fuel cell system is provided with a fuel cell, a first combustor, a first heating gas return channel and a gas supplier. The fuel cell includes a solid electrolyte cell with an anode and a cathode. The fuel cell generates power by reacting a hydrogen-containing gas and an oxygen-containing gas. The first combustor selectively supplies a heating gas to the cathode of the fuel cell. The first heating gas return channel mixes at least some exhaust gas discharged from the cathode with the heating gas of the first combustor such that a mixed heating gas of the exhaust gas and the heating gas is supplied to the cathode. The gas supplier connected to the first heating gas return channel for supplying the exhaust gas from the cathode to mix with the heating gas of the first combustor.Type: ApplicationFiled: July 2, 2010Publication date: March 15, 2012Applicant: NISSAN MOTOR CO., LTD.Inventors: Kazufumi Takeuchi, Tatsuya Yaguchi
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Publication number: 20100279184Abstract: A solid electrolyte fuel cell system includes a reformer to produce a hydrogen-rich reformed gas from fuel, oxygen and water, and a stack structure including a stack of fuel cell units each receiving supply of the reformed gas and air, and producing electricity. The fuel cell system further includes a reformed gas cooler to cool the reformed gas supplied from the reformer to the stack structure, and a temperature control section to control operation of the reformed gas cooler in accordance with an operating condition such as a request output of the stack structure. The reformed gas cooler includes a device such as a heat exchanger for cooling the reformed gas with a coolant such as air.Type: ApplicationFiled: November 11, 2008Publication date: November 4, 2010Inventors: Kazufumi Takeuchi, Hiromichi Miwa, Masaharu Hatano, Keiko Kushibiki, Tatsuya Yaguchi
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Publication number: 20100248056Abstract: A fuel cell apparatus (A1) includes a stack structure (B) including a plurality of solid electrolyte cell units (10) stacked with interspaces separating one another, and a case (20) enclosing the stack structure (B). The fuel cell apparatus (A1) further includes an inlet port (30) to introduce a reactant gas into the case (20), an outlet port (40) to discharge the reactant gas from the case (20), and a gas guide (50) extending from the inlet port (30) along an outer periphery of the stack structure (B). The gas guide (50) may include at least one guide member (50), and a heat transfer section.Type: ApplicationFiled: October 28, 2008Publication date: September 30, 2010Inventors: Tatsuya Yaguchi, Keiko Kushibiki, Yasushi Nakajima, Shigeo Ibuka, Kenji Ohara
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Publication number: 20100015503Abstract: A fuel cell (A1) includes a cell stack (B) and a casing (210) for housing the cell stack (B), and is supplied with two reactant gases flowing separately from each other. The cell stack (B) includes a plurality of solid electrolyte fuel cell units (200) stacked on one another with inter-unit spaces provided therebetween. One of the reactant gases is supplied to the inter-unit spaces and used for power generation. The casing (210) includes a peripheral wall (222) surrounding the cell stack (B). The peripheral wall (222) is provided with at least one gas inlet opening (223) for introducing the one of the reactant gases into the inter-unit spaces and at least one gas outlet opening (224) for discharging the introduced reactant gas, wherein total opening width dimension of the gas inlet opening (223) is greater than total opening width dimension of the gas outlet opening (224).Type: ApplicationFiled: January 31, 2008Publication date: January 21, 2010Inventors: Tatsuya Yaguchi, Yasushi Nakajima, Keiko Kushibiki, Shigeo Ibuka, Hirokazu Komatsu
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Publication number: 20090233141Abstract: In a plurality of solid oxide fuel cells (1) each including: a circular cell plate (2) holding single cells (6) as a solid oxide fuel cells and having a gas introducing opening (21) and a gas exhausting opening (22) in a central section; a circular separator plate (3) having a gas introducing opening (31) and a gas exhausting opening (32) in a central section and joined to the cell plate; and a central channel member (5) which is located in a space (S) formed by steps of the cell plate and the separator plate and performs supply and exhaust of fuel gas, a plurality of the solid oxide fuel cells are stacked facing a same direction, a interspace between each adjacent pair of the overlapping fuel cells serves as an air channel (15), sealing members (16) (17) allowing the gas intruding openings of the cell plate and the separator plate to airtightly communicate with each other and allowing the gas exhausting openings of the cell plate and the separator plate to airtightly communicate with each other are provide bType: ApplicationFiled: October 26, 2006Publication date: September 17, 2009Inventors: Keiko Kushibiki, Yasushi Nakajima, Shigeo Ibuka, Hirokazu Komatsu, Tatsuya Yaguchi
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Patent number: 7556878Abstract: The disclosure relates to a fuel cell including a solid electrolyte layer disposed on a separator plate. Another separator plate positioned adjacent the separator plate mounting the solid electrolyte layer are joined to a surface of the first separator plate to form an electrode separator assembly having a chamber between the joined separator plates. Working fluids may be supplied to or exhausted from the chamber through openings in fluid communication. A porous support member may be positioned within the chamber. The first separator plate and the porous support member may include a multiplicity of ribs defining channels in fluid communication with the chamber.Type: GrantFiled: April 21, 2006Date of Patent: July 7, 2009Assignee: Nissan Motor Co. Ltd.Inventors: Shigeo Ibuka, Keiko Kushibiki, Tatsuya Yaguchi