Patents by Inventor Yoshitsugu Sone
Yoshitsugu Sone 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: 10170784Abstract: The reservoirs 2 and 2? preliminarily contain liquid water, which is utilized as the water to be supplied to the polymer membrane. A vapor pressure of the water is set to a predetermined value in the reservoir by controlling the temperature of the reservoirs 2 and 2? individually. Pressure gauges 6 and 6? may be used for setting a vapor pressure of the water. The water which is gasified based on the set vapor pressure in the respective reservoir is supplied to the stack 10 along with oxygen from the reservoir 2, and with hydrogen from the reservoir 2?. This configuration makes it possible to adjust the amount of water contained in the polymer membrane and maintain the moisturization of the polymer membrane without external water supply.Type: GrantFiled: September 30, 2013Date of Patent: January 1, 2019Assignee: Japan Aerospace Exploration AgencyInventor: Yoshitsugu Sone
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Publication number: 20180321326Abstract: It is intended to recognize the state of charge or depth of discharge of the battery more accurately than conventional technologies and to recognize health of a battery appropriately. Complex impedance between positive and negative electrodes of the battery is determined at a plurality of frequencies, and the state of charge or depth of discharge of the battery is estimated by comparing frequency dependency of Warburg impedance of the determined complex impedances with frequency dependency of Warburg impedance corresponding to a known state of charge or depth of discharge of the battery.Type: ApplicationFiled: June 24, 2016Publication date: November 8, 2018Applicant: Japan Aerospace Exploration AgencyInventors: Kohei TANAKA, Yoshitsugu SONE, Seisuke FUKUDA, Masayuki ITAGAKI
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Patent number: 9954239Abstract: There are provided: a solid polymer power generation or electrolysis method that does not require injection of energy from the outside and maintenance of a high temperature, and is capable of converting carbon dioxide to a useful hydrocarbon while producing energy, controlling the production amounts of the hydrocarbons or the like and a ratio sorted by kind of the hydrocarbons, improving utilization efficiency of a product, and simplifying equipment for separation and recovery; and a system for implementing the solid polymer power generation or electrolysis method. Carbon dioxide is supplied to the side of one electrode 111 of a reactor 110 having a membrane electrode assembly 113, hydrogen is supplied to the side of the other electrode 112, and the amounts of the hydrocarbons produced per unit time and the ratio sorted by kind of the hydrocarbons are changed by controlling a power generation voltage of the reactor 110.Type: GrantFiled: September 10, 2014Date of Patent: April 24, 2018Assignee: JAPAN AEROSPACE EXPLORATION AGENCYInventors: Yoshitsugu Sone, Masato Sakurai, Asuka Shima, Minoru Umeda, Tetsuya Nakabeppu, Ryota Shinozaki, Toru Kinoshita
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Publication number: 20170101717Abstract: Provided are a water electrolysis method and a water electrolysis device in which mixing of the generated hydrogen and oxygen is greatly reduced and which have a high electrolysis efficiency, while being simplified in structure. In the water electrolysis method and water electrolysis device, water is electrolyzed by supplying water to the cathode side of an electrolytic membrane including a solid polymer membrane provided with a catalyst layer on a surface thereof and creating a potential difference between both surfaces of the electrolytic membrane. The temperature-controlled water is supplied only to the cathode side of the electrolytic membrane, while controlling the difference in pressure between both surfaces of the electrolytic membrane to 50 kPa or less.Type: ApplicationFiled: March 26, 2015Publication date: April 13, 2017Applicants: JAPAN AEROSPACE EXPLORATION AGENCY, Hitachi Zosen Corporation, W.L. Gore & Associates, Co., Ltd.Inventors: Yoshitsugu Sone, Masato Sakurai, Naoki Sato, Hirohisa Umemoto, Tetsuya Yoshida, Wataru Ishida, Hiroyoshi Fujimoto
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Patent number: 9567875Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.Type: GrantFiled: February 23, 2012Date of Patent: February 14, 2017Assignee: SHOWA DENKO K.K.Inventors: Shigehiro Chaen, Junichiro Kawaguchi, Hiroto Habu, Yoshitsugu Sone
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Publication number: 20160226090Abstract: There are provided: a solid polymer power generation or electrolysis method that does not require injection of energy from the outside and maintenance of a high temperature, and is capable of converting carbon dioxide to a useful hydrocarbon while producing energy, controlling the production amounts of the hydrocarbons or the like and a ratio sorted by kind of the hydrocarbons, improving utilization efficiency of a product, and simplifying equipment for separation and recovery; and a system for implementing the solid polymer power generation or electrolysis method. Carbon dioxide is supplied to the side of one electrode 111 of a reactor 110 having a membrane electrode assembly 113, hydrogen is supplied to the side of the other electrode 112, and the amounts of the hydrocarbons produced per unit time and the ratio sorted by kind of the hydrocarbons are changed by controlling a power generation voltage of the reactor 110.Type: ApplicationFiled: September 10, 2014Publication date: August 4, 2016Applicant: Japan Aerospace Exploration AgencyInventors: Yoshitsugu Sone, Masato Sakurai, Asuka Shima, Minoru Umeda, Tetsuya Nakabeppu, Ryota Shinozaki, Toru Kinoshita
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Publication number: 20150007568Abstract: A power generation apparatus, a power generation method, a decomposition-gas boiler, and a decomposition-gas turbine with which nitrous oxide may be used as an environmentally friendly energy source. A fuel gas including nitrous oxide (N2O) is supplied to a decomposition reactor (22) in which a catalyst (21) for decomposing nitrous oxide is disposed. Steam is generated by a decomposition-gas boiler by heat recovery from decomposition gas (N2, O2) generated by decomposing the nitrous oxide, the steam generated by the decomposition-gas boiler is used to drive the rotation of a steam turbine to obtain motive power, and the motive power is subsequently used to drive a generator to obtain electrical power. Alternatively, the decomposition gas (N2, O2) generated by decomposing the nitrous oxide is used to drive the rotation of a decomposition-gas turbine to obtain motive power.Type: ApplicationFiled: February 23, 2012Publication date: January 8, 2015Applicant: SHOWA DENKO K.K.Inventors: Shigehiro Chaen, Junichiro Kawaguchi, Hiroto Habu, Yoshitsugu Sone
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Publication number: 20140093795Abstract: The reservoirs 2 and 2? preliminarily contain liquid water, which is utilized as the water to be supplied to the polymer membrane. A vapor pressure of the water is set to a predetermined value in the reservoir by controlling the temperature of the reservoirs 2 and 2? individually. Pressure gauges 6 and 6? may be used for setting a vapor pressure of the water. The water which is gasified based on the set vapor pressure in the respective reservoir is supplied to the stack 10 along with oxygen from the reservoir 2, and with hydrogen from the reservoir 2?. This configuration makes it possible to adjust the amount of water contained in the polymer membrane and maintain the moisturization of the polymer membrane without external water supply.Type: ApplicationFiled: September 30, 2013Publication date: April 3, 2014Applicant: Japan Aerospace Exploration AgencyInventor: Yoshitsugu SONE
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Patent number: 8580440Abstract: Disclosed are an additive for improving charge/discharge characteristics of a lithium-ion cell, a nonaqueous electrolytic solution containing the additive, and a lithium-ion cell using the additive and/or the nonaqueous electrolytic solution. The additive serves as a solvent for a fluorine resin, such as poly(vinylidene fluoride), which is incorporated as an adhesive in a positive electrode containing a lithium-transition metal oxide capable of absorbing and releasing lithium and a negative electrode containing a carbon material capable of absorbing and releasing lithium. The additive comprises three compounds selected, respectively, from a 2-pyrrolidinone compound group, a cyclic alkyl compound group, and a cyclic pentanone compound group.Type: GrantFiled: April 13, 2011Date of Patent: November 12, 2013Assignee: Japan Aerospace Exploration AgencyInventors: Xianming Wang, Yoshitsugu Sone, Kenichi Kuwajima
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Patent number: 8124284Abstract: Disclosed are an additive for improving charge/discharge characteristics of a lithium-ion cell, a nonaqueous electrolytic solution containing the additive, and a lithium-ion cell using the additive and/or the nonaqueous electrolytic solution. The additive serves as a solvent for a fluorine resin, such as poly(vinylidene fluoride), which is incorporated as an adhesive in a positive electrode containing a lithium-transition metal oxide capable of absorbing and releasing lithium and a negative electrode containing a carbon material capable of absorbing and releasing lithium. The additive comprises three compounds selected, respectively, from a 2-pyrrolidinone compound group, a cyclic alkyl compound group, and a cyclic pentanone compound group.Type: GrantFiled: March 10, 2006Date of Patent: February 28, 2012Assignee: Japan Aerospace Exploration AgencyInventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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Publication number: 20110189547Abstract: Disclosed are an additive for improving charge/discharge characteristics of a lithium-ion cell, a nonaqueous electrolytic solution containing the additive, and a lithium-ion cell using the additive and/or the nonaqueous electrolytic solution. The additive serves as a solvent for a fluorine resin, such as poly(vinylidene fluoride), which is incorporated as an adhesive in a positive electrode containing a lithium-transition metal oxide capable of absorbing and releasing lithium and a negative electrode containing a carbon material capable of absorbing and releasing lithium. The additive comprises three compounds selected, respectively, from a 2-pyrrolidinone compound group, a cyclic alkyl compound group, and a cyclic pentanone compound group.Type: ApplicationFiled: April 13, 2011Publication date: August 4, 2011Inventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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Publication number: 20110159383Abstract: The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack formed by laminating a plurality of fuel cell units each of which includes a fuel electrode, an oxidant electrode, and a solid polymer electrolyte membrane interposed between the fuel and oxidant electrodes. The fuel cell unit is operable to generate an electric power through an electrochemical reaction between a first gas supplied to the side of the fuel electrode and a second gas supplied to the side of the oxidant electrode. In this fuel cell, the first gas supplied to the side of the fuel electrode and the second gas supplied to the side of the oxidant electrode are adapted to flow generally in opposite directions in the fuel cell stack, so that a water created on the side of oxidant electrode is reciprocally moved between the fuel electrode and the oxidant electrode to increase a water holding region in the solid polymer electrolyte membrane.Type: ApplicationFiled: February 28, 2011Publication date: June 30, 2011Inventors: Yoshitsugu Sone, Mitsushi Ueno, Saburou Kuwashima
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Patent number: 7341807Abstract: Disclosed are a non-flammable nonaqueous electrolyte solution and a lithium ion cell using the electrolyte solution. The non-flammable nonaqueous electrolyte solution comprises a ternary or higher-order compound additive, a high concentration of lithium salt and a phosphoric ester serving as a primary solvent. The lithium ion cell comprises a positive electrode containing a lithium transition metal oxide capable of absorbing and releasing lithium, a negative electrode containing a carbon-based material capable of absorbing and releasing lithium, and the above non-flammable nonaqueous electrolyte solution.Type: GrantFiled: February 27, 2006Date of Patent: March 11, 2008Assignee: Japan Aerospace Exploration AgencyInventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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Publication number: 20080038618Abstract: There is provided a fuel cell system having a moisture mixture separating mechanism capable of separating produced water in high purity. While a sheet member closes an outlet port of a drain port and an inlet port of a drain passage by closely adhering to an outlet-side opening end of the drain port and an inlet-side opening end of the drain passage in a state when hydraulic pressure within a Pitot tube is low, it elastically deforms and separates from the opening ends of the drain port and drain passage when the hydraulic pressure within the Pitot tube increases, thus communicating the outlet-side opening end of the drain port with the inlet-side opening end of the drain passage and discharging water in the drain port to the drain passage.Type: ApplicationFiled: August 13, 2007Publication date: February 14, 2008Applicant: JAPAN AEROSPACE EXPLORATION AGENCYInventors: Hitoshi NAITO, Yoshitsugu SONE, Mitsushi UENO
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Publication number: 20070259231Abstract: The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack formed by laminating a plurality of fuel cell units each of which includes a fuel electrode, an oxidant electrode, and a solid polymer electrolyte membrane interposed between the fuel and oxidant electrodes. The fuel cell unit is operable to generate an electric power through an electrochemical reaction between a first gas supplied to the side of the fuel electrode and a second gas supplied to the side of the oxidant electrode. In this fuel cell, the first gas supplied to the side of the fuel electrode and the second gas supplied to the side of the oxidant electrode are adapted to flow generally in opposite directions in the fuel cell stack, so that a water created on the side of oxidant electrode is reciprocally moved between the fuel electrode and the oxidant electrode to increase a water holding region in the solid polymer electrolyte membrane.Type: ApplicationFiled: February 7, 2007Publication date: November 8, 2007Inventors: Yoshitsugu Sone, Mitsushi Ueno, Saburou Kuwashima
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Patent number: 7273672Abstract: The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack 21 formed by laminating a plurality of fuel cell units each of which includes a fuel electrode 23, an oxidant electrode 24, and a solid polymer electrolyte membrane 22 interposed between the fuel and oxidant electrodes. The fuel cell unit is operable to generate an electric power through an electrochemical reaction between a first gas supplied to the side of the fuel electrode 23 and a second gas supplied to the side of the oxidant electrode 24. In this fuel cell, the first gas supplied to the side of the fuel electrode 23 and the second gas supplied to the side of the oxidant electrode 24 are adapted to flow generally in opposite directions in the fuel cell stack 21, so that a water created on the side of oxidant electrode 24 is reciprocally moved between the fuel electrode 23 and the oxidant electrode 24 to increase a water holding region in the solid polymer electrolyte membrane 22.Type: GrantFiled: March 13, 2003Date of Patent: September 25, 2007Assignee: Japan Aerospace Exploration AgencyInventors: Yoshitsugu Sone, Mitsushi Ueno, Saburou Kuwashima
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Publication number: 20060240329Abstract: Disclosed are a non-flammable nonaqueous electrolyte solution and a lithium ion cell using the electrolyte solution. The non-flammable nonaqueous electrolyte solution comprises a ternary or higher-order compound additive, a high concentration of lithium salt and a phosphoric ester serving as a primary solvent. The lithium ion cell comprises a positive electrode containing a lithium transition metal oxide capable of absorbing and releasing lithium, a negative electrode containing a carbon-based material capable of absorbing and releasing lithium, and the above non-flammable nonaqueous electrolyte solution.Type: ApplicationFiled: February 27, 2006Publication date: October 26, 2006Inventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwajima, Kenichi Kuwajima
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Publication number: 20060216613Abstract: Disclosed are an additive for improving charge/discharge characteristics of a lithium-ion cell, a nonaqueous electrolytic solution containing the additive, and a lithium-ion cell using the additive and/or the nonaqueous electrolytic solution. The additive serves as a solvent for a fluorine resin, such as poly(vinylidene fluoride), which is incorporated as an adhesive in a positive electrode containing a lithium-transition metal oxide capable of absorbing and releasing lithium and a negative electrode containing a carbon material capable of absorbing and releasing lithium. The additive comprises three compounds selected, respectively, from a 2-pyrrolidinone compound group, a cyclic alkyl compound group, and a cyclic pentanone compound group.Type: ApplicationFiled: March 10, 2006Publication date: September 28, 2006Inventors: Xianming Wang, Yoshitsugu Sone, Saburo Kuwashima, Kenichi Kuwajima
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Publication number: 20030198851Abstract: The present invention provides a solid polymer electrolyte fuel cell comprising a fuel cell stack 21 formed by laminating a plurality of fuel cell units each of which includes a fuel electrode 23, an oxidant electrode 24, and a solid polymer electrolyte membrane 22 interposed between the fuel and oxidant electrodes. The fuel cell unit is operable to generate an electric power through an electrochemical reaction between a first gas supplied to the side of the fuel electrode 23 and a second gas supplied to the side of the oxidant electrode 24. In this fuel cell, the first gas supplied to the side of the fuel electrode 23 and the second gas supplied to the side of the oxidant electrode 24 are adapted to flow generally in opposite directions in the fuel cell stack 21, so that a water created on the side of oxidant electrode 24 is reciprocally moved between the fuel electrode 23 and the oxidant electrode 24 to increase a water holding region in the solid polymer electrolyte membrane 22.Type: ApplicationFiled: March 13, 2003Publication date: October 23, 2003Inventors: Yoshitsugu Sone, Mitsushi Ueno, Saburou Kuwashima