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).

  • Publication number: 20240109061
    Abstract: 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: Application
    Filed: January 21, 2022
    Publication date: April 4, 2024
    Inventors: Norikazu KATAYAMA, Yoko KUMAGAI, Narushi ITO
  • Publication number: 20240053352
    Abstract: 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: Application
    Filed: January 21, 2022
    Publication date: February 15, 2024
    Inventors: Norikazu KATAYAMA, Yoko KUMAGAI, Narushi ITO, Noriko MIYAUCHI
  • Publication number: 20220091036
    Abstract: 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: Application
    Filed: September 27, 2019
    Publication date: March 24, 2022
    Inventors: Norikazu KATAYAMA, Narushi ITO
  • Publication number: 20210311070
    Abstract: 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: Application
    Filed: July 10, 2019
    Publication date: October 7, 2021
    Inventors: Koshin SEKIMIZU, Narushi ITO, Norikazu KATAYAMA
  • Publication number: 20210223200
    Abstract: Provided is a glycated protein sensor provided with: immobilized protease; immobilized ketoamine oxidase; and a hydrogen peroxide detection section.
    Type: Application
    Filed: May 17, 2019
    Publication date: July 22, 2021
    Inventors: Narushi ITO, Mitsumi NISHI, Norikazu KATAYAMA, Yuuya MIYAZAWA
  • Publication number: 20210048404
    Abstract: 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: Application
    Filed: March 29, 2019
    Publication date: February 18, 2021
    Inventors: Yuuya MIYAZAWA, Narushi ITO, Norikazu KATAYAMA, Mitsumi NISHI, Yoshiyuki YANAGIMOTO
  • Publication number: 20210007720
    Abstract: 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: Application
    Filed: March 25, 2019
    Publication date: January 14, 2021
    Inventors: Norikazu Katayama, Narushi Ito
  • Publication number: 20150148226
    Abstract: 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: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Inventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
  • Patent number: 8968567
    Abstract: 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: Grant
    Filed: February 18, 2009
    Date of Patent: March 3, 2015
    Assignees: Tanita Corporation, National Institute of Advanced Industrial Science and Technology
    Inventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
  • Patent number: 8145286
    Abstract: 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: Grant
    Filed: November 30, 2006
    Date of Patent: March 27, 2012
    Assignees: Keio University, Tanita Corporation
    Inventors: Tsunenori Arai, Yuki Kawase, Yasunobu Oka, Narushi Ito
  • Publication number: 20100126858
    Abstract: 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: Application
    Filed: December 18, 2009
    Publication date: May 27, 2010
    Applicant: TANITA CORPORATION
    Inventors: Soichi SAITO, Narushi ITO
  • Patent number: 7641784
    Abstract: 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: Grant
    Filed: January 28, 2004
    Date of Patent: January 5, 2010
    Assignee: Tanita Corporation
    Inventors: Soichi Saito, Narushi Ito
  • Publication number: 20090209753
    Abstract: 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: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Applicants: TANITA CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
  • Publication number: 20070161877
    Abstract: 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: Application
    Filed: November 30, 2006
    Publication date: July 12, 2007
    Applicants: Keio University, TANITA Corporation
    Inventors: Tsunenori Arai, Yuki Kawase, Yasunobu Oka, Narushi Ito
  • Patent number: 7229409
    Abstract: 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: Grant
    Filed: December 23, 2002
    Date of Patent: June 12, 2007
    Assignee: NEC Corporation
    Inventors: Narushi Ito, Akio Ohashi
  • Publication number: 20070077662
    Abstract: <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: Application
    Filed: September 7, 2006
    Publication date: April 5, 2007
    Inventors: Yohei Inaba, Kenji Yokoyama, Isao Karube, Narushi Ito
  • Publication number: 20060094124
    Abstract: 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: Application
    Filed: October 21, 2005
    Publication date: May 4, 2006
    Inventors: Narushi Ito, Akio Ohashi
  • Publication number: 20040182723
    Abstract: 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: Application
    Filed: January 28, 2004
    Publication date: September 23, 2004
    Inventors: Soichi Saito, Narushi Ito
  • Publication number: 20030109805
    Abstract: 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: Application
    Filed: December 23, 2002
    Publication date: June 12, 2003
    Applicant: NEC Corporation
    Inventors: Narushi Ito, Akio Ohashi
  • Patent number: 6572564
    Abstract: 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: Grant
    Filed: April 17, 2001
    Date of Patent: June 3, 2003
    Assignee: NEC Corporation
    Inventors: Narushi Ito, Akio Ohashi