Patents by Inventor Narushi Ito
Narushi Ito 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: 20240109061Abstract: According to an embodiment of the present disclosure, there is provided a microplate including at least one (or a plurality of) well and an electrochemical sensor.Type: ApplicationFiled: January 21, 2022Publication date: April 4, 2024Inventors: Norikazu KATAYAMA, Yoko KUMAGAI, Narushi ITO
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Publication number: 20240053352Abstract: An embodiment according to the present disclosure provides a method for evaluating a degree of glycation of a protein, the method including providing a solution potentially containing a target protein, bringing the solution into contact with a color indicator, bringing the solution into contact with protease, using a first reaction between the color indicator and the target protein to determine a concentration of the target protein in the solution, using a second reaction between the protease and the target protein to determine a concentration of the target protein having been glycated, and determining, based on the concentration of the target protein and the concentration of the target protein having been glycated, a degree of glycation of the target protein.Type: ApplicationFiled: January 21, 2022Publication date: February 15, 2024Inventors: Norikazu KATAYAMA, Yoko KUMAGAI, Narushi ITO, Noriko MIYAUCHI
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Publication number: 20220091036Abstract: Provided is a device for measuring a substance in a solution, provided with: a light source; a micro flow passage including at least a portion of an optical path of light emitted from the light source, and extending along said optical path; and a light receiver for detecting light that has passed through the micro flow passage.Type: ApplicationFiled: September 27, 2019Publication date: March 24, 2022Inventors: Norikazu KATAYAMA, Narushi ITO
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Publication number: 20210311070Abstract: The present disclosure provides a healthcare management method comprising acquiring a first data that includes a glycoalbumin concentration and an albumin concentration in a body fluid from a subject; generating, on the basis of the first data, output information related to the GA value; and providing the generated output information to a user.Type: ApplicationFiled: July 10, 2019Publication date: October 7, 2021Inventors: Koshin SEKIMIZU, Narushi ITO, Norikazu KATAYAMA
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Publication number: 20210223200Abstract: Provided is a glycated protein sensor provided with: immobilized protease; immobilized ketoamine oxidase; and a hydrogen peroxide detection section.Type: ApplicationFiled: May 17, 2019Publication date: July 22, 2021Inventors: Narushi ITO, Mitsumi NISHI, Norikazu KATAYAMA, Yuuya MIYAZAWA
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Publication number: 20210048404Abstract: A sensor chip (30), to be brought close to an organism to collect a body fluid in order to chemically measure the body fluid, is configured such that a surface (100) to be brought close to the organism is curved.Type: ApplicationFiled: March 29, 2019Publication date: February 18, 2021Inventors: Yuuya MIYAZAWA, Narushi ITO, Norikazu KATAYAMA, Mitsumi NISHI, Yoshiyuki YANAGIMOTO
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Publication number: 20210007720Abstract: The objective of the present invention is to provide a liquid sample collector capable of collecting a trace amount of a specimen such as a tear safely and in an adequate amount. This trace amount liquid sample collector is characterized in that: the liquid sample collector is provided with a main body and a first absorbent body; the main body has at least one open end portion; the main body includes a hydrophobic material having elasticity; the first absorbent body is disposed at least partially inside the main body; the first absorbent body includes a water-absorbent material; and the first absorbent body is disposed in such a way as to be capable of coming into contact with the outside by way of the at least one open end portion of the main body.Type: ApplicationFiled: March 25, 2019Publication date: January 14, 2021Inventors: Norikazu Katayama, Narushi Ito
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Publication number: 20150148226Abstract: Aimed at readily and exactly separate 8-hydroxy-2?-deoxyguanosine (8-OHdG) contained in a sample, a column packing material used for separating 8-OHdG, which contains a packing material composed of a material having a straight-chain hydrocarbon group having 6 or more and 30 or less carbon atoms as a functional group, and having a carbon content over the surface of carrier of 18% or less by element ratio, wherein the packing material contains 1 cumulative percent or more and 20 cumulative percent or less, on the particle-count basis, of particles having a circle-equivalent diameter, measured using a flow-type particle image analyzer, of 0.5 ?m or larger and 10 ?m or smaller, is used.Type: ApplicationFiled: January 30, 2015Publication date: May 28, 2015Inventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
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Patent number: 8968567Abstract: Aimed at readily and exactly separate 8-hydroxy-2?-deoxyguanosine (8-OHdG) contained in a sample, a column packing material used for separating 8-OHdG, which contains a packing material composed of a material having a straight-chain hydrocarbon group having 6 or more and 30 or less carbon atoms as a functional group, and having a carbon content over the surface of carrier of 18% or less by element ratio, wherein the packing material contains 1 cumulative percent or more and 20 cumulative percent or less, on the particle-count basis, of particles having a circle-equivalent diameter, measured using a flow-type particle image analyzer, of 0.5 ?m or larger and 10 ?m or smaller, is used.Type: GrantFiled: February 18, 2009Date of Patent: March 3, 2015Assignees: Tanita Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
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Patent number: 8145286Abstract: A device and method for optically measuring a substance in blood using the nail as an optical window are provided. A device for optically measuring a test substance in blood by using the nail as an optical window and correcting or eliminating fluctuation of a measurement value based on optical characteristics of the nail plate, comprising irradiation means applying light within a wavelength range for measuring absorption by the test substance to the nail of a subject, detection means detecting light diffused/reflected from or transmitted through the body of the subject, and processing means processing a signal obtained by the detection means to convert the signal into a concentration of the test substance.Type: GrantFiled: November 30, 2006Date of Patent: March 27, 2012Assignees: Keio University, Tanita CorporationInventors: Tsunenori Arai, Yuki Kawase, Yasunobu Oka, Narushi Ito
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Publication number: 20100126858Abstract: There is disclosed means for quickly solving instability of sensor sensitivity performances found in an initial stage and stabilizing the sensor sensitivity performances, when immersing a chemical sensor kept under a dry state in a buffer solution used as a storage liquid and applying a measurement bias between a working electrode and a reference electrode to make first use of the chemical sensor for measurement in which the chemical sensor is used. To make the first use of the chemical sensor, after immersing the chemical sensor kept under a dry state in the buffer solution used as the storage liquid, a first initial treatment bias having the same direction as that of the measurement bias and possessing an absolute value larger than that of the measurement bias is applied between the working electrode and the reference electrode for a first initial treatment time.Type: ApplicationFiled: December 18, 2009Publication date: May 27, 2010Applicant: TANITA CORPORATIONInventors: Soichi SAITO, Narushi ITO
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Patent number: 7641784Abstract: There is disclosed means for quickly solving instability of sensor sensitivity performances found in an initial stage and stabilizing the sensor sensitivity performances, when immersing a chemical sensor kept under a dry state in a buffer solution used as a storage liquid and applying a measurement bias between a working electrode and a reference electrode to make first use of the chemical sensor for measurement in which the chemical sensor is used. To make the first use of the chemical sensor, after immersing the chemical sensor kept under a dry state in the buffer solution used as the storage liquid, a first initial treatment bias having the same direction as that of the measurement bias and possessing an absolute value larger than that of the measurement bias is applied between the working electrode and the reference electrode for a first initial treatment time.Type: GrantFiled: January 28, 2004Date of Patent: January 5, 2010Assignee: Tanita CorporationInventors: Soichi Saito, Narushi Ito
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Publication number: 20090209753Abstract: Aimed at readily and exactly separate 8-hydroxy-2?-deoxyguanosine (8-OHdG) contained in a sample, a column packing material used for separating 8-OHdG, which contains a packing material composed of a material having a straight-chain hydrocarbon group having 6 or more and 30 or less carbon atoms as a functional group, and having a carbon content over the surface of carrier of 18% or less by element ratio, wherein the packing material contains 1 cumulative percent or more and 20 cumulative percent or less, on the particle-count basis, of particles having a circle-equivalent diameter, measured using a flow-type particle image analyzer, of 0.5 ?m or larger and 10 ?m or smaller, is used.Type: ApplicationFiled: February 18, 2009Publication date: August 20, 2009Applicants: TANITA CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
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Publication number: 20070161877Abstract: A device and method for optically measuring a substance in blood using the nail as an optical window are provided. A device for optically measuring a test substance in blood by using the nail as an optical window and correcting or eliminating fluctuation of a measurement value based on optical characteristics of the nail plate, comprising irradiation means applying light within a wavelength range for measuring absorption by the test substance to the nail of a subject, detection means detecting light diffused/reflected from or transmitted through the body of the subject, and processing means processing a signal obtained by the detection means to convert the signal into a concentration of the test substance.Type: ApplicationFiled: November 30, 2006Publication date: July 12, 2007Applicants: Keio University, TANITA CorporationInventors: Tsunenori Arai, Yuki Kawase, Yasunobu Oka, Narushi Ito
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Patent number: 7229409Abstract: A system for providing a home health care service includes a health care center, a service recipient device, and the Internet that connects these components. The health care center: is constructed on the Internet; includes a database for registering personal data that are necessary for the health care of registered at-home patients as basic health care data and storing measurement data that are provided from at-home patients over the course of time; and has the functions of inferring the health conditions of at-home patients based on the measurement data and the basic health care data, and offering appropriate services necessary for inferred health conditions. The service recipient device includes a biosensor and a signal processor. The biosensor detects chemical components contained in a substance that is discharged from the human body and converts detected values to electrical signals at the point of discharge.Type: GrantFiled: December 23, 2002Date of Patent: June 12, 2007Assignee: NEC CorporationInventors: Narushi Ito, Akio Ohashi
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Publication number: 20070077662Abstract: <Problem to be Solved>To provide a method for effectively and simply separating and condensing 8-OHdG which is present by a trace amount in body fluid, particularly in urine, and is frequently mingled with foreign substances with their peaks appearing around the peak thereof, a simple measurement method of 8-OHdG, and an apparatus for the measurement. [Solution]The present invention provides a method for effectively and simply separating and condensing 8-OHdG by an optimum combination of chromatographies. Specifically, the present invention comprises a method for separating and condensing 8-hydroxy-2?-deoxyguanosine (8-OHdG) from a body fluid, wherein a urine sample is contacted with a hydrophobic adsorbent which has, as the functional group, a straight chain hydrocarbon group having a carbon number of 6-30 and has a C % of 18% or less to capture the 8-OHdG.Type: ApplicationFiled: September 7, 2006Publication date: April 5, 2007Inventors: Yohei Inaba, Kenji Yokoyama, Isao Karube, Narushi Ito
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Publication number: 20060094124Abstract: A urine sugar meter measures an immediately-before-meal urine sugar value by immediately-before-meal urine sugar measuring means, notifies a subject that an after-meal urine sugar value should be measured after passage of a predetermined time from this measurement by after-meal urine sugar time signal means, measures an after-meal urine sugar value after this notification by after-meal urine sugar measuring means, computes a urine sugar change value X1 which represents the difference between the after-meal urine sugar value and the immediately-before-meal urine sugar value by urine sugar change value computing means, determines acceptability of a change in the amount of sugar in a body based on this computed urine sugar change value by sugar amount change acceptability determining means, and outputs the urine sugar change value and an indicator about the acceptability of the change in the amount of sugar in the body by urine sugar change data output means.Type: ApplicationFiled: October 21, 2005Publication date: May 4, 2006Inventors: Narushi Ito, Akio Ohashi
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Publication number: 20040182723Abstract: There is disclosed means for quickly solving instability of sensor sensitivity performances found in an initial stage and stabilizing the sensor sensitivity performances, when immersing a chemical sensor kept under a dry state in a buffer solution used as a storage liquid and applying a measurement bias between a working electrode and a reference electrode to make first use of the chemical sensor for measurement in which the chemical sensor is used. To make the first use of the chemical sensor, after immersing the chemical sensor kept under a dry state in the buffer solution used as the storage liquid, a first initial treatment bias having the same direction as that of the measurement bias and possessing an absolute value larger than that of the measurement bias is applied between the working electrode and the reference electrode for a first initial treatment time.Type: ApplicationFiled: January 28, 2004Publication date: September 23, 2004Inventors: Soichi Saito, Narushi Ito
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Publication number: 20030109805Abstract: A system for providing a home health care service includes a health care center, a service recipient device, and the Internet that connects these components. The health care center: is constructed on the Internet; includes a database for registering personal data that are necessary for the health care of registered at-home patients as basic health care data and storing measurement data that are provided from at-home patients over the course of time; and has the functions of inferring the health conditions of at-home patients based on the measurement data as well as the basic health care data and offering services necessary for health care or services appropriate for inferred health conditions, to at-home patients. The service recipient device includes a biosensor and a signal processor. The biosensor detects chemical components contained in a substance that is discharged from the human body and converts detected values to electrical signals at the point of discharge.Type: ApplicationFiled: December 23, 2002Publication date: June 12, 2003Applicant: NEC CorporationInventors: Narushi Ito, Akio Ohashi
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Patent number: 6572564Abstract: A system for providing a home health care service includes a health care center, a service recipient device, and the Internet that connects these components. The health care center: is constructed on the Internet; includes a database for registering personal data that are necessary for the health care of registered at-home patients as basic health care data and storing measurement data that are provided from at-home patients over the course of time; and has the functions of inferring the health conditions of at-home patients based on the measurement data as well as the basic health care data and offering services necessary for health care or services appropriate for inferred health conditions, to at-home patients. The service recipient device includes a biosensor and a signal processor. The biosensor detects chemical components contained in a substance that is discharged from the human body and converts detected values to electrical signals at the point of discharge.Type: GrantFiled: April 17, 2001Date of Patent: June 3, 2003Assignee: NEC CorporationInventors: Narushi Ito, Akio Ohashi