Patents by Inventor Yuzuru Takamura
Yuzuru Takamura 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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Publication number: 20220411853Abstract: This transistor sensor includes a substrate, a channel layer provided over one surface of the substrate, and a solid electrolyte layer provided between the substrate and the channel layer or over a surface of the channel layer on an opposite side to the substrate side, in which the channel layer includes an inorganic semiconductor, the solid electrolyte layer includes an inorganic solid electrolyte, and at least a portion of either one or both of the channel layer and the solid electrolyte layer includes an exposed portion exposed to outside.Type: ApplicationFiled: December 18, 2020Publication date: December 29, 2022Applicants: MITSUBISHI MATERIALS CORPORATION, JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Hiromi Nakazawa, Nobuyuki Soyama, Keiji Shirata, Toshihiro Doi, Tue Trong Phan, Yuzuru Takamura, Tatsuya Shimoda, Daisuke Hirose
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Patent number: 10431731Abstract: The present invention comprises: a step of applying a liquid composition for forming a PZT ferroelectric film; a step of drying the film applied with the liquid composition; a step of irradiating UV rays onto the dried film at a temperature of 150 to 200° C. in an oxygen-containing atmosphere; and after the application step, the drying step, and the UV irradiation step once, or more times, a step of firing for crystallizing a precursor film of the UV-irradiated ferroelectric film by raising a temperature with a rate of 0.5° C./second or higher in an oxygen-containing atmosphere or by raising a temperature with a rate of 0.2° C./second or higher in a non-oxygen containing atmosphere, followed by keeping the temperature at 400 to 500° C. An amount of liquid composition is set such that thickness of the ferroelectric film be 150 nm or more for each application and ozone is supplied during UV irradiation.Type: GrantFiled: August 26, 2016Date of Patent: October 1, 2019Assignees: JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, MITSUBISHI MATERIALS CORPORATIONInventors: Yuki Tagashira, Reijiro Shimura, Yuzuru Takamura, Jinwang Li, Tatsuya Shimoda, Toshiaki Watanabe, Nobuyuki Soyama
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Patent number: 10267759Abstract: Disclosed is a method of detecting a test substance contained in a sample using a working electrode and a counter electrode. The method comprises (A) forming a complex on the working electrode, the complex comprising the test substance and a metal particle; (B) washing the working electrode; (C) adding a measurement solution to the working electrode and measuring a current, voltage or electric charge from the metal on the working electrode in the measurement solution by electrochemical measurement; and (D) detecting the test substance in the sample based on a measurement result obtained in the step (C). In the method, the step (B) comprises washing the working electrode using a measurement solution having the same composition as the composition of the measurement solution used in the step (C).Type: GrantFiled: October 27, 2015Date of Patent: April 23, 2019Assignee: SYSMEX CORPORATIONInventors: Nobuyasu Hori, Yuichi Yasuda, Hiroya Kirimura, Yuzuru Takamura, Miyuki Chikae
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Publication number: 20180248109Abstract: The present invention comprises: a step of applying a liquid composition for forming a PZT ferroelectric film; a step of drying the film applied with the liquid composition; a step of irradiating UV rays onto the dried film at a temperature of 150 to 200° C. in an oxygen-containing atmosphere; and after the application step, the drying step, and the UV irradiation step once, or more times, a step of firing for crystallizing a precursor film of the UV-irradiated ferroelectric film by raising a temperature with a rate of 0.5° C./second or higher in an oxygen-containing atmosphere or by raising a temperature with a rate of 0.2° C./second or higher in a non-oxygen containing atmosphere, followed by keeping the temperature at 400 to 500° C. An amount of liquid composition is set such that thickness of the ferroelectric film be 150 nm or more for each application and ozone is supplied during UV irradiation.Type: ApplicationFiled: August 26, 2016Publication date: August 30, 2018Inventors: Yuki Tagashira, Reijiro Shimura, Yuzuru Takamura, Jinwang Li, Tatsuya Shimoda, Toshiaki Watanabe, Nobuyuki Soyama
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Publication number: 20180011054Abstract: Provided is a method for detecting a test substance. In this method, metal is deposited or a complex containing a test substance and a metal particle is immobilized on a working electrode on an electrode substrate including the working electrode and a counter electrode. An oxidation potential is applied to the working electrode to generate metal ions, then a reduction potential is applied to a portion having an area smaller than an area of the portion to which an oxidation potential is applied in the working electrode to deposit metal on the surface of the portion to which the reduction potential is applied, and current, voltage or charge caused by the metal deposited is measured to detect metal ions or a test substance.Type: ApplicationFiled: July 18, 2017Publication date: January 11, 2018Applicant: SYSMEX CORPORATIONInventors: Nobuyasu HORI, Hiroya KIRIMURA, Yuzuru TAKAMURA, Miyuki CHIKAE
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Patent number: 9804094Abstract: To improve the detection sensitivity, detection accuracy, and reproducibility when electrostatic discharge is generated in a sample solution and analysis is performed using light emission in the generated plasma. A flow channel 100, which has cylindrical main portions each expanding conically from a narrow portion, is filled with a conductive sample solution, and an electric field is applied to the flow channel 100 to generate plasma in the generated air bubbles, so that the resulting light emission is measured.Type: GrantFiled: November 20, 2012Date of Patent: October 31, 2017Assignee: Hitachi High-Technologies CorporationInventors: Yoshinobu Kohara, Yuzuru Takamura
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Patent number: 9334477Abstract: Method for concentrating and collecting small quantities of fetal nucleated red blood cells contained in the maternal blood. The method for concentrating and collecting nucleated red blood cells from the maternal blood comprises: (i) subjecting the maternal blood to a first density-gradient centrifugation and collecting a cell fraction containing nucleated red blood cells; (ii) treating the cell fraction containing nucleated red blood cells so as to selectively changes the density of the nucleated red blood cells from that of the white blood cells; and (iii) subjecting the treated cell fraction containing the nucleated red blood cells to a second density-gradient centrifugation so as to collect a fraction containing nucleated red blood cells.Type: GrantFiled: February 21, 2011Date of Patent: May 10, 2016Assignees: JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, KANAZAWA INSTITUTE OF TECHNOLOGY, KANAZAWA MEDICAL UNIVERSITYInventors: Yuzuru Takamura, Kotaro Idegami, Mieko Kogi, Haruo Takabayashi
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Publication number: 20160116428Abstract: Disclosed is a method of detecting a test substance contained in a sample using a working electrode and a counter electrode. The method comprises (A) forming a complex on the working electrode, the complex comprising the test substance and a metal particle; (B) washing the working electrode; (C) adding a measurement solution to the working electrode and measuring a current, voltage or electric charge from the metal on the working electrode in the measurement solution by electrochemical measurement; and (D) detecting the test substance in the sample based on a measurement result obtained in the step (C). In the method, the step (B) comprises washing the working electrode using a measurement solution having the same composition as the composition of the measurement solution used in the step (C).Type: ApplicationFiled: October 27, 2015Publication date: April 28, 2016Applicant: SYSMEX CORPORATIONInventors: Nobuyasu HORI, Yuichi YASUDA, Hiroya KIRIMURA, Yuzuru TAKAMURA, Miyuki CHIKAE
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Patent number: 9222890Abstract: To improve detection sensitivity, detection accuracy, and reproducibility when electric discharge is caused in a sample solution to perform analysis with light emission in the plasma, a flow channel 101 provided with a narrow part is filled with a conductive sample solution, plasma is generated in bubbles formed by applying an electric field to the flow channel, and a region other than the narrow part in the flow channel is set as a measurement object region to measure light emission.Type: GrantFiled: January 13, 2012Date of Patent: December 29, 2015Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yoshinobu Kohara, Yuzuru Takamura
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Publication number: 20150015880Abstract: To improve the detection sensitivity, detection accuracy, and reproducibility when electrostatic discharge is generated in a sample solution and analysis is performed using light emission in the generated plasma. A flow channel 100, which has cylindrical main portions each expanding conically from a narrow portion, is filled with a conductive sample solution, and an electric field is applied to the flow channel 100 to generate plasma in the generated air bubbles, so that the resulting light emission is measured.Type: ApplicationFiled: November 20, 2012Publication date: January 15, 2015Inventors: Yoshinobu Kohara, Yuzuru Takamura
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Patent number: 8927219Abstract: A method for evaluating the quality of a blood sample, comprising the steps of: mixing labeled anti-cortisol antibodies with a blood sample to be subjected, to conduct the antigen-antibody reaction of the labeled anti-cortisol antibody with cortisol contained in the blood sample, developing a mixture obtained in the above step on an immunochromatographic test strip having a substrate on which cortisol is immobilized to cause the antigen-antibody reaction of the labeled anti-cortisol antibodies which are free in the mixture with the cortisol immobilized on the substrate, thereby bonding the antibody to the cortisol, determining the amount of the labeled anti-cortisol antibodies bonded to the cortisol in the above step, and evaluating whether or not the blood sample has a quality suitable for suprarenal vein sampling test on the basis of the amount of the labeled anti-cortisol antibodies determined in the above step.Type: GrantFiled: November 25, 2008Date of Patent: January 6, 2015Assignees: Japan Advanced Institute of Science and Technology, Kanazawa UniversityInventors: Koutarou Idegami, Takashi Yoneda, Yuzuru Takamura
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Publication number: 20130321803Abstract: To improve detection sensitivity, detection accuracy, and reproducibility when electric discharge is caused in a sample solution to perform analysis with light emission in the plasma, a flow channel 101 provided with a narrow part is filled with a conductive sample solution, plasma is generated in bubbles formed by applying an electric field to the flow channel, and a region other than the narrow part in the flow channel is set as a measurement object region to measure light emission.Type: ApplicationFiled: January 13, 2012Publication date: December 5, 2013Inventors: Yoshinobu Kohara, Yuzuru Takamura
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Publication number: 20130072402Abstract: This invention provides a method for concentrating and collecting small quantities of fetal nucleated red blood cells contained in the maternal blood. The method for concentrating and collecting nucleated red blood cells from the maternal blood comprises: (i) subjecting the maternal blood to a first density-gradient centrifugation and collecting a cell fraction containing nucleated red blood cells; (ii) treating the cell fraction containing nucleated red blood cells so as to selectively changes the density of the nucleated red blood cells from that of the white blood cells; and (iii) subjecting the treated cell fraction containing the nucleated red blood cells to a second density-gradient centrifugation so as to collect a fraction containing nucleated red blood cells.Type: ApplicationFiled: February 21, 2011Publication date: March 21, 2013Applicants: JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, KANAZAWA MEDICAL UNIVERSITY, KANAZAWA INSTITUTE OF TECHNOLOGYInventors: Yuzuru Takamura, Kotaro Idegami, Mieko Kogi, Haruo Takabayashi
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Publication number: 20120301867Abstract: Provided is a chip or the like having a particulate concentrating mechanism such as a mechanism that can selectively concentrate nucleated red blood cells contained in maternal blood and derived from a fetus and can collect the concentrated liquid rich in nucleated red blood cells, and also provided is a nucleated red blood cell concentrating/collecting method. A micro-channel chip for concentrating nucleated red blood cells has an inlet-side channel, an outlet-side channel, and a separation narrow channel provided between the inlet-side channel and the outlet-side channel. The separation narrow channel has an inner wall having a dimension through which non-nucleated red blood cells easily pass and nucleated red blood cells hardly pass, and has a means for deforming or moving part of the inner wall of the channel to have a dimension through which nucleated red blood cells easily pass.Type: ApplicationFiled: September 2, 2010Publication date: November 29, 2012Applicants: KANAZAWA MEDICAL UNIVERSITY, Japan Advanced Institute of Science and TechnologyInventors: Takeshi Kumo, Yuzuru Takamura, Haruo Takabayashi
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Publication number: 20110244476Abstract: A method for evaluating the quality of a blood sample, comprising the steps of: mixing labeled anti-cortisol antibodies with a blood sample to be subjected, to conduct the antigen-antibody reaction of the labeled anti-cortisol antibody with cortisol contained in the blood sample, developing a mixture obtained in the above step on an immunochromatographic test strip having a substrate on which cortisol is immobilized to cause the antigen-antibody reaction of the labeled anti-cortisol antibodies which are free in the mixture with the cortisol immobilized on the substrate, thereby bonding the antibody to the cortisol, determining the amount of the labeled anti-cortisol antibodies bonded to the cortisol in the above step, and evaluating whether or not the blood sample has a quality suitable for suprarenal vein sampling test on the basis of the amount of the labeled anti-cortisol antibodies determined in the above step.Type: ApplicationFiled: November 25, 2008Publication date: October 6, 2011Applicants: Japan Advanced Institute of Science and Technology, Kanazawa UniversityInventors: Koutarou Idegami, Takashi Yoneda, Yuzuru Takamura
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Patent number: 7875825Abstract: A method for generating plasma and a method for elemental analysis, each comprising the steps of providing a narrow portion in a flow channel made of an insulation material, the narrow portion having a cross-sectional area markedly smaller than a cross-sectional area of the flow channel; filling the flow channel and the narrow portion with a conductive liquid, and thereafter applying an electric field to the narrow portion, to conduct the electric field through the narrow portion, thereby generating plasma at the narrow portion.Type: GrantFiled: March 25, 2005Date of Patent: January 25, 2011Assignee: Japan Advanced Institute of Science and TechnologyInventors: Yuzuru Takamura, Akiko Iiduka, Eiichi Tamiya
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Publication number: 20070164003Abstract: A method for generating plasma and a method for elemental analysis, each comprising the steps of providing a narrow portion in a flow channel made of an insulation material, the narrow portion having a cross-sectional area markedly smaller than a cross-sectional area of the flow channel; filling the flow channel and the narrow portion with a conductive liquid, and thereafter applying an electric field to the narrow portion, to conduct the electric field through the narrow portion, thereby generating plasma at the narrow portion.Type: ApplicationFiled: March 25, 2005Publication date: July 19, 2007Inventors: Yuzuru Takamura, Akiko Iiduka, Eiichi Tamiya
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Publication number: 20030114785Abstract: A blood analyzing apparatus is provided, which includes a microcapillary fabricated on a substrate by a micromanufacturing technique and used for sampling, filtering, separating, and moving blood and a detector so as to conduct a process from sampling blood to analyzing it using the substrate. A blood analyzing method is also provided for conducting a process from sampling blood to analyzing it by using the blood analyzing apparatus.Type: ApplicationFiled: December 31, 2002Publication date: June 19, 2003Inventors: Jun Kikuchi, Yasuhiro Horiike, Hiroki Ogawa, Yuzuru Takamura, Akio Oki, Sakuichiro Adachi, Takanori Ichiki, Kazuhiko Ishihara