Patents by Inventor Nobuhiro Tomosada
Nobuhiro Tomosada 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: 11003178Abstract: A facility diagnosis device includes: a process data acquirer that acquires process data indicating a state of a process executed in a plant; a production data acquirer that acquires production data indicating a production state in the plant; a state information generator that generates state information for estimating an operation state of a facility operating in the process based on the acquired process data or the acquired production data, or the process data and the production data; and a determiner that determines the operation state of the facility based on the acquired process data or the generated state information and the acquired production data.Type: GrantFiled: January 10, 2017Date of Patent: May 11, 2021Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Sho Fujita, Nobuhiro Tomosada, Kazuma Takenaka, Shinya Kato, Taro Kemmotsu
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Publication number: 20190033840Abstract: A facility diagnosis device includes: a process data acquirer that acquires process data indicating a state of a process executed in a plant; a production data acquirer that acquires production data indicating a production state in the plant; a state information generator that generates state information for estimating an operation state of a facility operating in the process based on the acquired process data or the acquired production data, or the process data and the production data; and a determiner that determines the operation state of the facility based on the acquired process data or the generated state information and the acquired production data.Type: ApplicationFiled: January 10, 2017Publication date: January 31, 2019Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Sho Fujita, Nobuhiro Tomosada, Kazuma Takenaka, Shinya Kato, Taro Kemmotsu
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Patent number: 9548506Abstract: In one embodiment, there is provided a fuel cell evaluator for evaluating a characteristic of a fuel cell based on a frequency characteristic of impedance of the fuel cell. The evaluator includes: an impedance acquisition unit configured to acquire impedances of the fuel cell for a certain current value in a Tafel region by changing a measurement frequency; an extraction unit configured to extract a reaction resistance from the acquired impedances; a calculator configured to calculate the product of the reaction resistance and the certain current value; and an indicator configured to indicate the product calculated by the calculator as the frequency characteristic of the impedance of the fuel cell.Type: GrantFiled: December 8, 2011Date of Patent: January 17, 2017Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Daisuke Yamazaki, Tetsuo Yano, Souichirou Torai, Nobuhiro Tomosada, Atsufumi Kimura, Tomomi Akutsu, Makoto Kawano
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Patent number: 9535131Abstract: A method for determining response characteristics of a battery includes: pressurizing the battery in a direction to reduce a distance between electrode surfaces of the battery; and applying a voltage or a current to the pressurized battery to determine response characteristics of the battery.Type: GrantFiled: December 28, 2013Date of Patent: January 3, 2017Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Makoto Kawano, Tomomi Akutsu, Nobuhiro Tomosada, Tetsuo Yano, Souichirou Torai
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Patent number: 9194900Abstract: An electrode evaluation apparatus for evaluating a characteristic of an electrode based on an electrochemical property includes a potential control unit, an impedance acquiring unit, a current value acquiring unit, and a normalized impedance calculation unit. The potential control unit is configured to control a potential applied to an electrode. The impedance acquiring unit is configured to acquire an impedance characteristic of the electrode under a specific DC operating condition provided by the potential control unit. The current value acquiring unit is configured to acquire a temporal change in direct current value under the specific DC operating condition. The normalized impedance calculation unit is configured to apply the temporal change in direct current value acquired by the current value acquiring unit to calculate a normalized impedance where impedance acquired by the impedance acquiring unit is multiplied by the direct current value.Type: GrantFiled: February 6, 2013Date of Patent: November 24, 2015Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Souichirou Torai, Daisuke Yamazaki, Nobuhiro Tomosada, Tomomi Akutsu, Makoto Kawano, Tetsuo Yano
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Patent number: 9128166Abstract: There is provided a secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery. The tester includes: an impedance acquiring section configured to acquire an impedance value of the secondary battery; and a determining section configured to determine a state of a solid electrolyte interface (SEI) layer of the secondary battery based on the impedance value acquired by the impedance acquiring section.Type: GrantFiled: October 20, 2011Date of Patent: September 8, 2015Assignee: YOKOGAWA ELECTRIC CORPORATIONInventors: Tomomi Akutsu, Daisuke Yamazaki, Nobuhiro Tomosada, Atsufumi Kimura, Makoto Kawano, Souichirou Torai, Tetsuo Yano
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Publication number: 20140191764Abstract: A method for determining response characteristics of a battery includes: pressurizing the battery in a direction to reduce a distance between electrode surfaces of the battery; and applying a voltage or a current to the pressurized battery to determine response characteristics of the battery.Type: ApplicationFiled: December 28, 2013Publication date: July 10, 2014Applicant: Yokogawa Electric CorporationInventors: Makoto KAWANO, Tomomi AKUTSU, Nobuhiro TOMOSADA, Tetsuo YANO, Souichirou TORAI
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Patent number: 8563191Abstract: A fuel cell system according to one aspect of the invention is operated in an ordinary mode and in a gas leakage detection mode. The fuel cell system includes fuel cells, a fuel gas supplier configured to supply a fuel gas to the fuel cells, a shutoff valve provided in a flow path for leading a flow of the fuel gas supply from the fuel gas supplier to the fuel cells and configured to shut off the fuel gas supply, and a variable pressure regulator provided in the flow path between the shutoff valve and the fuel cells to regulate a pressure of the fuel gas in a downstream in a flow direction of the fuel gas supply to a variable pressure value. In the ordinary mode, the fuel cell system sets the pressure value of the variable pressure regulator to an ordinary power generation pressure value for ordinary power generation.Type: GrantFiled: July 26, 2006Date of Patent: October 22, 2013Assignee: Totota Jidosha Kabushiki KaishaInventors: Koji Katano, Keigo Suematsu, Nobuhiro Tomosada
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Patent number: 8486577Abstract: In a fuel cell system of the invention, a hydrogen leakage detection process closes a shutoff valve, which shuts off a supply of hydrogen from a hydrogen supply unit into a hydrogen supply flow path, and opens a pressure regulator, which reduces a pressure of hydrogen in the hydrogen supply flow path, so as to keep the hydrogen supply flow path in a state with no pressure regulation and make the fuel cell system in a leakage detectable state. In this leakage detectable state, the hydrogen leakage detection process measures at least one of a pressure and a flow rate as a state quantity of hydrogen in the hydrogen supply flow path that feeds the supply of hydrogen to fuel cells. The hydrogen leakage detection process analyzes a detected behavior of the state quantity in the leakage detectable process and specifies the occurrence of a hydrogen leakage in the downstream of the hydrogen supply unit.Type: GrantFiled: July 26, 2006Date of Patent: July 16, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keigo Suematsu, Tatsuaki Yokoyama, Koji Katano, Nobuhiro Tomosada
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Publication number: 20120182020Abstract: There is provided a secondary battery tester for testing a state of a secondary battery based on an impedance characteristic of the secondary battery. The tester includes: an impedance acquiring section configured to acquire an impedance value of the secondary battery; and a determining section configured to determine a state of a solid electrolyte interface (SEI) layer of the secondary battery based on the impedance value acquired by the impedance acquiring section.Type: ApplicationFiled: October 20, 2011Publication date: July 19, 2012Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Tomomi AKUTSU, Daisuke YAMAZAKI, Nobuhiro TOMOSADA, Atsufumi KIMURA, Makoto KAWANO, Souichirou TORAI, Tetsuo YANO
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Publication number: 20120145564Abstract: In one embodiment, there is provided a fuel cell evaluator for evaluating a characteristic of a fuel cell based on a frequency characteristic of impedance of the fuel cell. The evaluator includes: an impedance acquisition unit configured to acquire impedances of the fuel cell for a certain current value in a Tafel region by changing a measurement frequency; an extraction unit configured to extract a reaction resistance from the acquired impedances; a calculator configured to calculate the product of the reaction resistance and the certain current value; and an indicator configured to indicate the product calculated by the calculator as the frequency characteristic of the impedance of the fuel cell.Type: ApplicationFiled: December 8, 2011Publication date: June 14, 2012Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Daisuke Yamazaki, Tetsuo Yano, Souichirou Torai, Nobuhiro Tomosada, Atsufumi Kimura, Tomomi Akutsu, Makoto Kawano
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Publication number: 20100151343Abstract: A fuel cell system according to one aspect of the invention is operated in an ordinary mode and in a gas leakage detection mode. The fuel cell system includes fuel cells, a fuel gas supplier configured to supply a fuel gas to the fuel cells, a shutoff valve provided in a flow path for leading a flow of the fuel gas supply from the fuel gas supplier to the fuel cells and configured to shut off the fuel gas supply, and a variable pressure regulator provided in the flow path between the shutoff valve and the fuel cells to regulate a pressure of the fuel gas in a downstream in a flow direction of the fuel gas supply to a variable pressure value. In the ordinary mode, the fuel cell system sets the pressure value of the variable pressure regulator to an ordinary power generation pressure value for ordinary power generation.Type: ApplicationFiled: July 26, 2006Publication date: June 17, 2010Inventors: Koji Katano, Koigo Suomatsu, Nobuhiro Tomosada
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Patent number: 7648787Abstract: In a fuel cell system (100), the amount of fuel gas supplied through an fuel gas supply passage (24) and the amount of fuel gas consumed by a fuel cell (10) are detected. A difference between the amount of supplied fuel gas and the amount of consumed fuel gas is calculated by subtracting the amount of consumed fuel gas from the amount of supplied fuel gas. The pressure of the fuel gas in a leak detection passage (Cx), the change in the pressure of the detected fuel gas can be detected, and the change in the amount of fuel gas in the gas leak detection passage (Cx) due to the change in the pressure of the fuel gas can thus be detected. The difference is corrected by subtracting the change in the amount of fuel gas in the gas leak detection passage from the difference. When the corrected difference is equal to or greater than a predetermined value, a fuel gas leak is detected in the leak detection passage (Cx).Type: GrantFiled: November 28, 2005Date of Patent: January 19, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Keigo Suematsu, Tatsuaki Yokoyama, Kenji Umayahara, Nobuhiro Tomosada
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Publication number: 20090035612Abstract: In a fuel cell system of the invention, a hydrogen leakage detection process closes a shutoff valve, which shuts off a supply of hydrogen from a hydrogen supply unit into a hydrogen supply flow path, and opens a pressure regulator, which reduces a pressure of hydrogen in the hydrogen supply flow path, so as to keep the hydrogen supply flow path in a state with no pressure regulation and make the fuel cell system in a leakage detectable state. In this leakage detectable state, the hydrogen leakage detection process measures at least one of a pressure and a flow rate as a state quantity of hydrogen in the hydrogen supply flow path that feeds the supply of hydrogen to fuel cells. The hydrogen leakage detection process analyzes a detected behavior of the state quantity in the leakage detectable process and specifies the occurrence of a hydrogen leakage in the downstream of the hydrogen supply unit.Type: ApplicationFiled: July 26, 2006Publication date: February 5, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Keigo Suematsu, Tatsuaki Yokoyama, Koji Katano, Nobuhiro Tomosada
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Publication number: 20070224473Abstract: In a fuel cell system (100), the amount of fuel gas supplied through an fuel gas supply passage (24) and the amount of fuel gas consumed by a fuel cell (10) are detected. A difference between the amount of supplied fuel gas and the amount of consumed fuel gas is calculated by subtracting the amount of consumed fuel gas from the amount of supplied fuel gas. The pressure of the fuel gas in a leak detection passage (Cx), the change in the pressure of the detected fuel gas can be detected, and the change in the amount of fuel gas in the gas leak detection passage (Cx) due to the change in the pressure of the fuel gas can thus be detected. The difference is corrected by subtracting the change in the amount of fuel gas in the gas leak detection passage from the difference. When the corrected difference is equal to or greater than a predetermined value, a fuel gas leak is detected in the leak detection passage (Cx).Type: ApplicationFiled: November 28, 2005Publication date: September 27, 2007Inventors: Keigo Suematsu, Tatsuaki Yokoyama, Kenji Umayahara, Nobuhiro Tomosada
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Patent number: 6631029Abstract: An optical image separation system, connected to a confocal image output port of a Nipkow disk type confocal scanner, wherein light returned from a sample and emitted from the confocal image output port is separated into a plurality of different wavelen regions, respectively, so that a plurality of samples emitting different wavelenghts are concurrently detected.Type: GrantFiled: March 5, 2001Date of Patent: October 7, 2003Assignees: Yokogawa Electric Corporation, Visitech International, Ltd.Inventors: Shinichirou Kawamura, Hideomi Negishi, Nobuhiro Tomosada, Shinya Ootsuki, Jafer Shelbee, Kenneth Bell
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Publication number: 20010054676Abstract: An optical image separation system, connected to a confocal image output port of a Nipkow disk type confocal scanner, wherein light returned from a sample and emitted from the confocal image output port is separated into a plurality of different wavelen regions, respectively, so that a plurality of samples emitting different wavelenghts are concurrently detected.Type: ApplicationFiled: March 5, 2001Publication date: December 27, 2001Inventors: Shinichirou Kawamura, Hideomi Negishi, Nobuhiro Tomosada, Shinya Ootsuki, Jafer Shelbee, Kenneth Bell
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Patent number: 6248995Abstract: Confocal microscopic equipment that can photograph confocal images at high speed and with good signal to noise ratio, wherein the equipment obtains confocal images by rotating a disk having a plurality of apertures and by scanning a sample on which light beams passing through the apertures are focused; and comprising a light source, an optical microscope, a high speed camera that photographs confocal images, a high speed confocal scanner that scans a sample with an output light beam from the light source via the optical microscope, and outputs the return light from the sample to the high speed camera, and a memory that stores confocal images photographed with the high speed camera on a real time basis.Type: GrantFiled: May 15, 1998Date of Patent: June 19, 2001Assignee: Yokogawa Electric CorporationInventors: Takeo Tanaami, Shinya Otsuki, Yasuhito Kosugi, Nobuhiro Tomosada