Patents by Inventor Ryohto SAWADA
Ryohto SAWADA 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: 12000790Abstract: This invention prevents measurement error from becoming large in thermoelectric conversion coefficient evaluation and enhances evaluation efficiency. This invention is a physical property evaluation device for evaluating the physical properties of a plurality of solid materials formed on a substrate. The physical property evaluation device comprises an electromotive force measurement means that forms closed circuits including the individual solid materials and measures the electromotive forces occurring at the two ends of each of the solid materials, a means for producing heat flow within the individual solid materials, an external magnetic field generation means for generating a uniform magnetic field having a given intensity and direction in the vicinity of the individual solid materials, and an automation means for evaluating the physical properties of the individual solid materials using the electromotive force measurement means, heat flow production means, and external magnetic field generation means.Type: GrantFiled: August 5, 2019Date of Patent: June 4, 2024Assignee: NEC CORPORATIONInventors: Masahiko Ishida, Ryohto Sawada, Yuma Iwasaki, Akihiro Kirihara, Hiroko Someya
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Publication number: 20240112764Abstract: An information processing device includes one or more processors. The one or more processors are configured to optimize, for a specific elementary reaction in a reaction using a catalyst including a plurality of elementary reactions, an arrangement of a promoter element in the catalyst based on activation energy acquired using a trained model, and search for the promoter element based on the activation energy acquired using the trained model for each type of the promoter element.Type: ApplicationFiled: December 8, 2023Publication date: April 4, 2024Applicants: ENEOS Corporation, Preferred Networks, Inc.Inventors: Yoshihiro YAYAMA, Yusuke ASANO, Takafumi ISHII, Takao KUDO, Taku WATANABE, Ryohto SAWADA
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Patent number: 11917917Abstract: A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.Type: GrantFiled: December 13, 2019Date of Patent: February 27, 2024Assignee: NEC CORPORATIONInventors: Akihiro Kirihara, Yasutomo Omori, Ryohto Sawada, Masahiko Ishida, Koichi Terashima, Yuma Iwasaki, Hiroko Someya
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Patent number: 11870083Abstract: Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.Type: GrantFiled: October 25, 2019Date of Patent: January 9, 2024Assignee: NEC CORPORATIONInventors: Akihiro Kirihara, Yuma Iwasaki, Masahiko Ishida, Koichi Terashima, Ryohto Sawada
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Patent number: 11744469Abstract: In order to enable the measurement of thermal property information about a subject, this thermal diffusion coefficient measuring device, which is used by contacting the surface of a living body, is provided with: a biological information sensor comprising a temperature sensor and a heat flux sensor; and a heating/cooling control means. The temperature sensor is provided at a position contacting the surface of the living body, and operates so as to detect skin temperature. The heat flux sensor is provided at a position contacting the surface of the living body, while being adjacent to the temperature sensor, and operates so as to detect heat flux on the surface of the living body. The heating/cooling control means enables the measurement of the temperature diffusion coefficient of a thermal resistance component that is present between the biological information sensor and a deep inner portion of the living body.Type: GrantFiled: March 20, 2018Date of Patent: September 5, 2023Assignees: NEC CORPORATION, TOHOKU UNIVERSITYInventors: Masahiko Ishida, Ryo Iguchi, Yuki Shiomi, Eiji Saitoh, Ryohto Sawada, Akihiro Kirihara, Koichi Terashima, Yasuyuki Oikawa
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Publication number: 20220058175Abstract: To assist a person to make an appropriate action plan based on multi-dimensional data. A data analysis apparatus includes an input part which receives first multi-dimensional data made up by a set of multi-dimensional vectors; a calculation part which divides a first multi-dimensional space spanned by the first multi-dimensional data into a second multi-dimensional space(s), interpolates second multi-dimensional data forming the second multi-dimensional space(s) among the first multi-dimensional data, and estimates a regression model(s); and an analysis part which determines whether or not there is a deficiency in the first multi-dimensional data based on an estimation result of the regression model(s).Type: ApplicationFiled: September 12, 2019Publication date: February 24, 2022Applicant: NEC CorporationInventor: Ryohto SAWADA
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Publication number: 20220052247Abstract: A thermoelectric conversion element that has a power generation layer containing an iron-aluminum based magnetic alloy material containing equal to or more than 70 weight percent of iron and aluminum in total. The power generation layer generates an electromotive force, due to an anomalous Nernst effect that develops in the magnetic alloy material in response to a temperature gradient applied thereto, in a direction intersecting both the magnetization direction of the magnetic alloy material and the direction of the applied temperature gradient.Type: ApplicationFiled: December 13, 2019Publication date: February 17, 2022Applicant: NEC CorporationInventors: Akihiro KIRIHARA, Yasutomo OMORI, Ryohto SAWADA, Masahiko ISHIDA, Koichi TERASHIMA, Yuma IWASAKI, Hiroko SOMEYA
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Publication number: 20220037576Abstract: A portable power supply according to the present invention is provided with a combustion device (20) and a heating container (30) that retains an object to be heated, wherein at least a part of a portion of the heating container, the portion being directly heated by the combustion device, is provided with a magnetic metal plate (32) that has spontaneous magnetization and that generates electromotive force due to an anomalous Nernst effect induced by the heating, and wherein electrodes (33a, 33b) for drawing power are provided. Thus, the heating container for generating electricity has a simple configuration, and furthermore the portable power supply is provided with both the heating container and the combustion device.Type: ApplicationFiled: November 14, 2019Publication date: February 3, 2022Applicant: NEC CorporationInventors: Akihiro KIRIHARA, Masahiko ISHIDA, Koichi TERASHIMA, Yuma IWASAKI, Ryohto SAWADA, Yasutomo OMORI
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Publication number: 20210395865Abstract: A magnetic alloy material that includes iron and cobalt as main components and at least one element selected from the group containing of platinum, gold, and iridium.Type: ApplicationFiled: November 21, 2019Publication date: December 23, 2021Applicant: NEC CorporationInventors: Yuma IWASAKI, Masahiko ISHIDA, Akihiro KIRIHARA, Koichi TERASHIMA, Ryohto SAWADA, Hiroko SOMEYA, Yasutomo OMORI
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Publication number: 20210366666Abstract: Provided are an exterior body and an abnormality detector capable of suppressing bulking even when a heat generation detection function is provided. The exterior body of an electronic device generates heat during operation and is characterized by being provided with a magnetic body that is at least a portion of the exterior body, that has spontaneous magnetization, and that generates an electromotive force by exhibiting an abnormal Nernst effect through heat generation of the electronic device, wherein an electrode for extracting power is provided to the magnetic body.Type: ApplicationFiled: October 25, 2019Publication date: November 25, 2021Applicant: NEC CorporationInventors: Akihiro KIRIHARA, Yuma IWASAKI, Masahiko ISHIDA, Koichi TERASHIMA, Ryohto SAWADA
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Publication number: 20210302343Abstract: This invention prevents measurement error from becoming large in thermoelectric conversion coefficient evaluation and enhances evaluation efficiency. This invention is a physical property evaluation device for evaluating the physical properties of a plurality of solid materials formed on a substrate. The physical property evaluation device comprises an electromotive force measurement means that forms closed circuits including the individual solid materials and measures the electromotive forces occurring at the two ends of each of the solid materials, a means for producing heat flow within the individual solid materials, an external magnetic field generation means for generating a uniform magnetic field having a given intensity and direction in the vicinity of the individual solid materials, and an automation means for evaluating the physical properties of the individual solid materials using the electromotive force measurement means, heat flow production means, and external magnetic field generation means.Type: ApplicationFiled: August 5, 2019Publication date: September 30, 2021Applicant: NEC CorporationInventors: Masahiko ISHIDA, Ryohto SAWADA, Yuma IWASAKI, Akihiro KIRIHARA, Hiroko SOMEYA
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Patent number: 11105376Abstract: In order to determine information about the generation of heat in a bearing (10) in a simple manner, a bearing (10) includes an outer ring (12) secured to a securing member, and an inner ring (11) provided on the inside of the outer ring (12) and secured to a shaft that rotates in the circumferential direction relative to the securing member. A thermal flow sensor (14) is provided as a coating on a securing-side surface that includes the outer ring (12), and generates a thermoelectromotive force including information about frictional heat generated with the rotation of the shaft.Type: GrantFiled: August 3, 2018Date of Patent: August 31, 2021Assignees: NEC CORPORATION, TOHOKU UNIVERSITYInventors: Akihiro Kirihara, Masahiko Ishida, Koichi Terashima, Ryohto Sawada, Eiji Saitoh, Yasuyuki Oikawa, Ryo Iguchi, Masao Ono
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Publication number: 20210026853Abstract: A combination search system includes: a storage that stores actual data in which input information indicating a combination of values taken by elements of the multi dimensions in the confirmation work in the past or in a real space is associated with output information indicating a value of the predetermined parameter obtained for the combination indicated by the input information at that time; and a search unit that repeats, a process of determining at least one combination to be used in next confirmation work on the basis of importance of information that is an index defined for each combination of the elements, the index being calculated from the actual data and being based on an amount of change in uncertainty of the value of the predetermined parameter in a whole of a search space due to that new output information for the combination is added to the actual data.Type: ApplicationFiled: February 15, 2019Publication date: January 28, 2021Applicant: NEC CorporationInventors: Ryohto SAWADA, Masahiko ISHIDA, Yuma IWASAKI
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Publication number: 20200395526Abstract: To protect the surface of a member exposed to a high-temperature environment and detect surface temperature or heat flow distribution, this magnetic thermoelectric conversion element, which is provided on the surface of a support in contact with a heat source, has: a magnetic body; an electromotive body which is magnetically coupled to the magnetic body and has electrical conductivity; and a heat-resistant metal oxide film covering the magnetic body and the electromotive body.Type: ApplicationFiled: November 21, 2018Publication date: December 17, 2020Applicants: NEC CORPORATION, TOHOKU UNIVERSITYInventors: Masahiko ISHIDA, Akihiro KIRIHARA, Ryohto SAWADA, Eiji SAITOH, Ryo IGUCHI, Yasuyuki OIKAWA, Masao ONO
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Publication number: 20200313062Abstract: A thermoelectric conversion element 10 includes an anomalous Nernst material 11 having the anomalous Nernst effect, in which: the anomalous Nernst material 11 includes at least an element having the inverse spin-Hall effect; and the element is spin-polarized. By applying, for example, a magnetic field to such the thermoelectric conversion element 10 in the x direction and a temperature gradient thereto in the z direction, thermoelectromotive force can be taken out from terminals 12.Type: ApplicationFiled: August 13, 2018Publication date: October 1, 2020Applicant: NEC CORPORATIONInventors: Yuma IWASAKI, Masahiko ISHIDA, Akihiro KIRIHARA, Koichi TERASHIMA, Ryohto SAWADA, Hiroko SOMEYA
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Publication number: 20200263736Abstract: In order to determine information about the generation of heat in a bearing (10) in a simple manner, a bearing (10) includes an outer ring (12) secured to a securing member, and an inner ring (11) provided on the inside of the outer ring (12) and secured to a shaft that rotates in the circumferential direction relative to the securing member. A thermal flow sensor (14) is provided as a coating on a securing-side surface that includes the outer ring (12), and generates a thermoelectromotive force including information about frictional heat generated with the rotation of the shaft.Type: ApplicationFiled: August 3, 2018Publication date: August 20, 2020Applicants: NEC CORPORARATION, TOHOKU UNIVERSITYInventors: Akihiro KIRIHARA, Masahilo ISHIDA, Koichi TERASHIMA, Ryohto SAWADA, Eiji SAITOH, Yasuyuki OIKAWA, Ryo IGUCHI, Masao ONO
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Publication number: 20200194651Abstract: A thermoelectric conversion unit includes a plurality of pipes 1 and a thermoelectric conversion element. A first fluid flows through the pipe 1. The thermoelectric conversion element 2 is wound around each of the pipes 1, and generates electric power due to a temperature difference between the first fluid and a second fluid flowing outside the pipe 1. Further, the thermoelectric conversion element 2 has a sheet shape.Type: ApplicationFiled: December 5, 2017Publication date: June 18, 2020Applicant: NEC CORPORATIONInventors: Yuma IWASAKI, Masahiko ISHIDA, Akihiro KIRIHARA, Koichi TERASHIMA, Ryohto SAWADA, Hiroko SOMEYA
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Publication number: 20200037884Abstract: In order to enable the measurement of thermal property information about a subject, this thermal diffusion coefficient measuring device, which is used by contacting the surface of a living body, is provided with: a biological information sensor comprising a temperature sensor and a heat flux sensor; and a heating/cooling control means. The temperature sensor is provided at a position contacting the surface of the living body, and operates so as to detect skin temperature. The heat flux sensor is provided at a position contacting the surface of the living body, while being adjacent to the temperature sensor, and operates so as to detect heat flux on the surface of the living body. The heating/cooling control means enables the measurement of the temperature diffusion coefficient of a thermal resistance component that is present between the biological information sensor and a deep inner portion of the living body.Type: ApplicationFiled: March 20, 2018Publication date: February 6, 2020Applicants: NEC CORPORATION, TOHOKU UNIVERSITYInventors: Masahiko ISHIDA, Ryo IGUCHI, Yuki SHIOMI, Eiji SAITOH, Ryohto SAWADA, Akihiro KIRIHARA, Koichi TERASHIMA, Yasuyuki OIKAWA
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Publication number: 20200034367Abstract: A relation search system includes: a storage means (1) which stores a data set which includes a first-type data group and a second-type data group which are two types of data group that are acquired by different methods; a data adaptation means (2) which either corrects or reconstructs either first data which belongs to the first-type data group or second data which belongs to the second-type data group and which is associated with the first data, such that a divergence which arises between the first data and the second data because of the difference in the methods for the acquisition thereof is reduced; and a learning means (3) which, using the data set which includes the corrected or reconstructed data, carries out machine learning.Type: ApplicationFiled: March 6, 2018Publication date: January 30, 2020Applicant: NEC CorporationInventors: Yuma IWASAKI, Masahiko ISHIDA, Akihiro KIRIHARA, Koichi TERASHIMA, Hiroko SOMEYA, Ryohto SAWADA