Patents by Inventor Tomokazu Matsue
Tomokazu Matsue 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: 11940440Abstract: An electrochemical measurement method is provided in which a working electrode that causes an oxidation-reduction reaction with a measurement target and a counter electrode connected to the working electrode are provided in an electrolytic solution containing the measurement target, and a measuring voltage is applied between the working electrode and the counter electrode to measure a current that flows between the working electrode and the counter electrode in proportion to the amount of the measurement target, wherein an eliminating electrode is provided in the electrolytic solution, and the method performs: eliminating the measurement target by applying an eliminating voltage, which has the same polarity as the measuring voltage, between the eliminating electrode and the counter electrode to oxidize or reduce the measurement target; diffusing a new measurement target; and measuring the current by applying the measuring voltage between the working electrode and the counter electrode.Type: GrantFiled: April 26, 2021Date of Patent: March 26, 2024Assignees: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Hiroyuki Hayashi, Ryota Kunikata, Atsushi Suda, Kosuke Ino, Kumi Inoue, Tomokazu Matsue
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Patent number: 11859167Abstract: An electrochemical measurement device for measuring a chemical substance generated or consumed in a biological sample in a solution includes electrode surfaces, a spacer, and at least one wall plate. The electrode surfaces, the spacer, and the wall plate are arranged on the same flat surface. Each of the electrode surfaces has a diameter del not more than 80 ?m. A height of the spacer has a predetermined value within a range given by h=21.8(del+0.8)/(del+9.7)±5 [?m]. The spacer has a structure in which an enclosed three-dimensional region is not formed by the biological sample, the flat surface, and the spacer while the biological sample is in contact with the spacer. The wall plate has a property of being impervious to a dissolved substance in the solution and has a height not less than the height of the spacer. Two of the electrode surfaces are separated by the wall plate.Type: GrantFiled: July 2, 2021Date of Patent: January 2, 2024Assignees: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Ryota Kunikata, Hiroyuki Hayashi, Atsushi Suda, Kosuke Ino, Kumi Inoue, Tomokazu Matsue
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Patent number: 11772084Abstract: The present invention provides a catalyst which has oxygen reduction catalytic ability surpassing that of a platinum-carrying carbon material. This catalyst comprises a carbon material and a metal complex represented by formula (1). In formula (1), X1 to X8 each independently represent a hydrogen atom or a halogen atom, D1 to D4 each represent a nitrogen atom or a carbon atom wherein the carbon atom has bound thereto a hydrogen atom or a halogen atom, and M represents a metallic atom.Type: GrantFiled: December 26, 2018Date of Patent: October 3, 2023Assignee: Azul Energy Inc.Inventors: Hiroshi Yabu, Tomokazu Matsue, Akichika Kumatani, Hiroya Abe, Yutaro Hirai, Kohei Nozaki
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Patent number: 11542612Abstract: A hydrogel is formed by a reaction which is induced, in an electrolytic solution, by an electrode product electrochemically generated by electrodes installed in the electrolytic solution. An apparatus including an electrolytic tank with a bottom surface on which a two-dimensional array of working electrodes is provided and a counter electrode installed in the electrolytic tank is prepared. An electrolytic solution containing a dissolved substance that causes electrolytic deposition of a hydrogel is housed in the electrolytic tank. By applying a predetermined voltage to one or more selected working electrodes of the two-dimensional array, a hydrogel with a two-dimensional pattern corresponding to the arrangement of the selected working electrodes is formed.Type: GrantFiled: March 16, 2022Date of Patent: January 3, 2023Assignees: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke Ino, Tomokazu Matsue, Hitoshi Shiku, Mayuko Terauchi, Noriko Taira, Ryota Kunikata, Atsushi Suda
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Patent number: 11460437Abstract: Provided are a device and a method for rapidly and simply detecting endotoxin without using an expensive reagent. The endotoxin detection device includes: a region containing an electrolyte solution; a partitioning member that partitions the region into two compartments such that the two compartments are in communication via a nanopore; a first electrode that is disposed in a first compartment; a second electrode that is disposed in a second compartment and is electrically connected to the first electrode; an electrolyte solution flow generating means that causes electrolyte solution in the first compartment to move to the second compartment via the nanopore; an application means that applies voltage between the first electrode and the second electrode; and a monitoring means that monitors current.Type: GrantFiled: March 6, 2020Date of Patent: October 4, 2022Assignee: TOHOKU UNIVERSITYInventors: Takahiro Ito, Kumi Inoue, Kentaro Ito, Hitoshi Shiku, Tomokazu Matsue
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Publication number: 20220229010Abstract: Provided is a method for electrochemically detecting a catalytic reaction product that is generated by progress of a catalytic reaction in a first lump of liquid and dissolved in the first lump of liquid, the method including: containing the first lump of liquid and a second lump of liquid in a liquid bath, the second lump of liquid being in contact with the first lump of liquid to form a liquid-liquid interface and not dissolving the catalytic reaction product; arranging a working electrode in the first lump of liquid, and arranging a counter electrode and a reference electrode in the second lump of liquid; and detecting a current flowing through the working electrode by an oxidation or reduction reaction of the catalytic reaction product at the working electrode.Type: ApplicationFiled: April 10, 2020Publication date: July 21, 2022Applicants: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Ryota KUNIKATA, Atsushi SUDA, Hiroyuki HAYASHI, Kosuke INO, Tomokazu MATSUE
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Publication number: 20220221424Abstract: A method of electrochemically detecting a catalytic reaction product by confining the catalytic reaction product within a first lump of liquid and by using a working electrode disposed in the first lump of liquid and a counter electrode disposed in a second lump of liquid, the catalytic reaction product being generated by progress of a catalytic reaction in the first lump of liquid, and the second lump of liquid being in contact with the first lump of liquid to form a liquid-liquid interface, the method including placing a retaining structure in the liquid bath, the retaining structure allowing the first lump of liquid to permeate and being able to retain the first lump of liquid; and allowing the catalytic reaction to progress and detecting the catalytic reaction product with the first lump of liquid retained to the retaining structure.Type: ApplicationFiled: April 10, 2020Publication date: July 14, 2022Applicants: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Ryota KUNIKATA, Atsushi SUDA, Hiroyuki HAYASHI, Kosuke INO, Tomokazu MATSUE
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Publication number: 20220205116Abstract: A hydrogel is formed by a reaction which is induced, in an electrolytic solution, by an electrode product electrochemically generated by electrodes installed in the electrolytic solution. An apparatus including an electrolytic tank with a bottom surface on which a two-dimensional array of working electrodes is provided and a counter electrode installed in the electrolytic tank is prepared. An electrolytic solution containing a dissolved substance that causes electrolytic deposition of a hydrogel is housed in the electrolytic tank. By applying a predetermined voltage to one or more selected working electrodes of the two-dimensional array, a hydrogel with a two-dimensional pattern corresponding to the arrangement of the selected working electrodes is formed.Type: ApplicationFiled: March 16, 2022Publication date: June 30, 2022Applicants: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke INO, Tomokazu MATSUE, Hitoshi SHIKU, Mayuko TERAUCHI, Noriko TAIRA, Ryota KUNIKATA, Atsushi SUDA
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Publication number: 20220205115Abstract: A hydrogel is formed by a reaction which is induced, in an electrolytic solution, by an electrode product electrochemically generated by electrodes installed in the electrolytic solution. An apparatus including an electrolytic tank with a bottom surface on which a two-dimensional array of working electrodes is provided and a counter electrode installed in the electrolytic tank is prepared. An electrolytic solution containing a dissolved substance that causes electrolytic deposition of a hydrogel is housed in the electrolytic tank. By applying a predetermined voltage to one or more selected working electrodes of the two-dimensional array, a hydrogel with a two-dimensional pattern corresponding to the arrangement of the selected working electrodes is formed.Type: ApplicationFiled: March 16, 2022Publication date: June 30, 2022Applicants: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke INO, Tomokazu MATSUE, Hitoshi SHIKU, Mayuko TERAUCHI, Noriko TAIRA, Ryota KUNIKATA, Atsushi SUDA
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Patent number: 11326262Abstract: A hydrogel is formed by a reaction which is induced, in an electrolytic solution, by an electrode product electrochemically generated by electrodes installed in the electrolytic solution. An apparatus including an electrolytic tank with a bottom surface on which a two-dimensional array of working electrodes is provided and a counter electrode installed in the electrolytic tank is prepared. An electrolytic solution containing a dissolved substance that causes electrolytic deposition of a hydrogel is housed in the electrolytic tank. By applying a predetermined voltage to one or more selected working electrodes of the two-dimensional array, a hydrogel with a two-dimensional pattern corresponding to the arrangement of the selected working electrodes is formed.Type: GrantFiled: January 24, 2018Date of Patent: May 10, 2022Assignees: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke Ino, Tomokazu Matsue, Hitoshi Shiku, Mayuko Terauchi, Noriko Taira, Ryota Kunikata, Atsushi Suda
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Publication number: 20220042947Abstract: Provided are a device and a method for rapidly and simply detecting endotoxin without using an expensive reagent. The endotoxin detection device includes: a region containing an electrolyte solution; a partitioning member that partitions the region into two compartments such that the two compartments are in communication via a nanopore; a first electrode that is disposed in a first compartment; a second electrode that is disposed in a second compartment and is electrically connected to the first electrode; an electrolyte solution flow generating means that causes electrolyte solution in the first compartment to move to the second compartment via the nanopore; an application means that applies voltage between the first electrode and the second electrode; and a monitoring means that monitors current.Type: ApplicationFiled: March 6, 2020Publication date: February 10, 2022Applicant: TOHOKU UNIVERSITYInventors: Takahiro ITO, Kumi INOUE, Kentaro ITO, Hitoshi SHIKU, Tomokazu MATSUE
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Patent number: 11162064Abstract: An electrochemical measurement device for measuring a chemical substance generated or consumed in a biological sample in a solution includes electrode surfaces, a spacer, and at least one wall plate. The electrode surfaces, the spacer, and the wall plate are arranged on the same flat surface. Each of the electrode surfaces has a diameter del not more than 80 ?m. A height of the spacer has a predetermined value within a range given by h=21.8(del+0.8)/(del+9.7)±5 [?m]. The spacer has a structure in which an enclosed three-dimensional region is not formed by the biological sample, the flat surface, and the spacer while the biological sample is in contact with the spacer. The wall plate has a property of being impervious to a dissolved substance in the solution and has a height not less than the height of the spacer. Two of the electrode surfaces are separated by the wall plate.Type: GrantFiled: September 20, 2017Date of Patent: November 2, 2021Assignees: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Ryota Kunikata, Hiroyuki Hayashi, Atsushi Suda, Kosuke Ino, Kumi Inoue, Tomokazu Matsue
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Publication number: 20210332321Abstract: An electrochemical measurement device for measuring a chemical substance generated or consumed in a biological sample in a solution includes electrode surfaces, a spacer, and at least one wall plate. The electrode surfaces, the spacer, and the wall plate are arranged on the same flat surface. Each of the electrode surfaces has a diameter del not more than 80 ?m. A height of the spacer has a predetermined value within a range given by h=21.8(del+0.8)/(del+9.7)±5 [?m]. The spacer has a structure in which an enclosed three-dimensional region is not formed by the biological sample, the flat surface, and the spacer while the biological sample is in contact with the spacer. The wall plate has a property of being impervious to a dissolved substance in the solution and has a height not less than the height of the spacer. Two of the electrode surfaces are separated by the wall plate.Type: ApplicationFiled: July 2, 2021Publication date: October 28, 2021Applicants: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Ryota KUNIKATA, Hiroyuki HAYASHI, Atsushi SUDA, Kosuke INO, Kumi INOUE, Tomokazu MATSUE
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Publication number: 20210308659Abstract: The present invention provides a catalyst which has oxygen reduction catalytic ability surpassing that of a platinum-carrying carbon material. This catalyst comprises a carbon material and a metal complex represented by formula (1). In formula (1), X1 to X8 each independently represent a hydrogen atom or a halogen atom, D1 to D4 each represent a nitrogen atom or a carbon atom wherein the carbon atom has bound thereto a hydrogen atom or a halogen atom, and M represents a metallic atom.Type: ApplicationFiled: December 26, 2018Publication date: October 7, 2021Inventors: Hiroshi Yabu, Tomokazu Matsue, Akichika Kumatani, Hiroya Abe, Yutaro Hirai, Kohei Nozaki
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Publication number: 20210247376Abstract: An electrochemical measurement method is provided in which a working electrode that causes an oxidation-reduction reaction with a measurement target and a counter electrode connected to the working electrode are provided in an electrolytic solution containing the measurement target, and a measuring voltage is applied between the working electrode and the counter electrode to measure a current that flows between the working electrode and the counter electrode in proportion to the amount of the measurement target, wherein an eliminating electrode is provided in the electrolytic solution, and the method performs: eliminating the measurement target by applying an eliminating voltage, which has the same polarity as the measuring voltage, between the eliminating electrode and the counter electrode to oxidize or reduce the measurement target; diffusing a new measurement target; and measuring the current by applying the measuring voltage between the working electrode and the counter electrode.Type: ApplicationFiled: April 26, 2021Publication date: August 12, 2021Applicants: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Hiroyuki HAYASHI, Ryota KUNIKATA, Atsushi SUDA, Kosuke INO, Kumi INOUE, Tomokazu MATSUE
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Patent number: 11016078Abstract: An electrochemical measurement method is provided in which a working electrode that causes an oxidation-reduction reaction with a measurement target and a counter electrode connected to the working electrode are provided in an electrolytic solution containing the measurement target, and a measuring voltage is applied between the working electrode and the counter electrode to measure a current that flows between the working electrode and the counter electrode in proportion to the amount of the measurement target, wherein an eliminating electrode is provided in the electrolytic solution, and the method performs: eliminating the measurement target by applying an eliminating voltage, which has the same polarity as the measuring voltage, between the eliminating electrode and the counter electrode to oxidize or reduce the measurement target; diffusing a new measurement target; and measuring the current by applying the measuring voltage between the working electrode and the counter electrode.Type: GrantFiled: October 11, 2016Date of Patent: May 25, 2021Assignees: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Hiroyuki Hayashi, Ryota Kunikata, Atsushi Suda, Kosuke Ino, Kumi Inoue, Tomokazu Matsue
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Publication number: 20210003548Abstract: An electrochemical measurement apparatus includes: a tank containing electrolytic solution and a sample that generates or consumes measurement target substances in the electrolytic solution; a plurality of uniformly mixed working electrodes; and a counter electrode; the apparatus adapted to simultaneously apply a voltage between each of the working electrodes and the counter electrode; and the apparatus configured to measure a current that flows between each of the working electrodes and the counter electrode; wherein any two working electrode groups are mutually different in at least any of the determined voltage, presence/absence of a molecular modification of an electrode surface, and a species of the molecular modification; and whereby a distribution in measurement area of the currents that flow through the working electrodes is acquired.Type: ApplicationFiled: September 21, 2020Publication date: January 7, 2021Applicants: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke INO, Yusuke KANNO, Tomokazu MATSUE, Kumi INOUE, Ryota KUNIKATA, Hiroyuki HAYASHI, Atsushi SUDA
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Publication number: 20210003549Abstract: An electrochemical measurement apparatus includes: a tank containing electrolytic solution and a sample that generates or consumes measurement target substances in the electrolytic solution; a plurality of uniformly mixed working electrodes; and a counter electrode; the apparatus adapted to simultaneously apply a voltage between each of the working electrodes and the counter electrode; and the apparatus configured to measure a current that flows between each of the working electrodes and the counter electrode; wherein any two working electrode groups are mutually different in at least any of the determined voltage, presence/absence of a molecular modification of an electrode surface, and a species of the molecular modification; and whereby a distribution in measurement area of the currents that flow through the working electrodes is acquired.Type: ApplicationFiled: September 21, 2020Publication date: January 7, 2021Applicants: TOHOKU UNIVERSITY, JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITEDInventors: Kosuke INO, Yusuke KANNO, Tomokazu MATSUE, Kumi INOUE, Ryota KUNIKATA, Hiroyuki HAYASHI, Atsushi SUDA
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Patent number: 10883963Abstract: The present invention addresses the problem of providing a means for making highly sensitive and stable measurements possible using electrochemical measurement methods. This problem is resolved by providing: a labeling substance represented by general formula (1) and used to label a substrate; a measurement substrate that is formed by being labeled using the labeling substance; a method of measuring using electrochemical measurement methods that use the measurement substrate; and a reagent kit that includes as components the labeling substance and/or the measurement substrate. (In general formula (1), R1 is either H or an alkyl group (CmH2m+1), m is an integer of 1-4, R2 is an alkyl group (CnH2n+1), and n is an integer of 1-4.Type: GrantFiled: February 15, 2017Date of Patent: January 5, 2021Assignees: SEIKAGAKU CORPORATION, TOHOKU UNIVERSITYInventors: Hikaru Mizumura, Toshio Oda, Tomokazu Matsue, Kumi Inoue
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Patent number: 10732137Abstract: An electrochemical measurement method is provided in which a working electrode and a counter electrode are provided in an electrolytic solution containing the measurement target and a measuring voltage is applied between the working electrode and the counter electrode to measure a current flowing between the working electrode and the counter electrode in proportion to the amount of the measurement target. A measurement target eliminating thin-wire electrode made of thin wire stretched in such a shape that extends from one point on the bottom into space in the electrolytic solution well and back to another point on the bottom is provided. The electrochemical measurement method includes: eliminating the measurement target by applying an eliminating voltage having the same polarity as the measuring voltage between the measurement target eliminating thin-wire electrode and the counter electrode; and diffusing a new measurement target after stopping the application of the eliminating voltage.Type: GrantFiled: December 13, 2016Date of Patent: August 4, 2020Assignees: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, TOHOKU UNIVERSITYInventors: Hiroyuki Hayashi, Ryota Kunikata, Atsushi Suda, Kosuke Ino, Kumi Inoue, Tomokazu Matsue