Patents by Inventor Hakhyun Nam

Hakhyun Nam 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: 20230264185
    Abstract: The capillary blood pipette tip system of the present invention includes a pipette tip for collecting capillary blood including a sampling unit having a capillary tube having a first diameter so as to sample a capillary blood; a sample storage unit having a first extension end formed from a distal end of the capillary tube of the sampling unit so as to have a larger area than the sampling unit; a sealing unit closely adhered to a distal opening of the sample storage unit and broken by a quantitative syringe introduced from the outside; a shielding wall surrounding the sealing unit to prevent the sample from splashing from the sample storage unit to the outside when the sealing unit is broken by the quantitative syringe; and a handle unit which is held by a user to sample using the sampling unit; an immunoassay cartridge having at least one pipette tip mounting well having a plunger that presses a sample of a sampling unit of the pipette tip from the bottom to the top when the pipette tip is coupled to the top
    Type: Application
    Filed: June 1, 2021
    Publication date: August 24, 2023
    Applicant: I-SENS, INC.
    Inventors: Kyungho KIM, Yungjoon JIN, Yu Sung KIM, Hakhyun NAM
  • Patent number: 11378540
    Abstract: An apparatus for measuring a concentration of an analyte in a bio-sample using an electrochemical bio-sensor, includes a connector with a sample cell in which an oxidation/reduction enzyme and an electron transfer mediator are fixed and a working electrode and an counter electrode are provided; a digital-to-analog converter circuit configured to apply a constant DC voltage to start the oxidation/reduction reaction of the analyte, proceed with an electron transfer reaction, and apply a ?-step ladder-type perturbation potential for fluctuating a potential of the sample cell after applying the constant DC voltage; and a microcontroller configured to control the digital-to-analog converter circuit and directly obtain a concentration value of the analyte from a calibration equation using the ?-step ladder-type perturbation potential.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: July 5, 2022
    Assignee: I-SENS, INC.
    Inventors: Geun Sig Cha, Hakhyun Nam, Seok-Won Lee, Sung Hyuk Choi, Youngjea Kang, Myeongho Lee, Ho Dong Park, Sung Pil Cho
  • Patent number: 11262365
    Abstract: The present invention relates to a kit for quantitative analysis of glycated hemoglobin (HbA1c), and the kit for quantitative analysis of HbA1c according to the present invention has excellent long-term stability of an enzyme reagent and thus has an effect of easily overcoming the disadvantages of the conventional reagents used in enzyme assays (e.g., storage, accuracy, portability, convenience of use, etc.).
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: March 1, 2022
    Assignee: I-SENS, INC.
    Inventors: Dongxuan Shen, Jihoon Kim, Joo Young Cho, Kap Soo Park, Hyeong Eun Kim, Hyun Kyu Cho, Seok Won Lee, Hakhyun Nam, Geun Sig Cha
  • Publication number: 20210285909
    Abstract: The present invention has been made in an effort to provide an analyte concentration measurement method using artificial intelligence deep learning, capable of extracting useful features that are not known in advance by humans through deep learning using artificial neural networks by imaging input signals obtained during the measurement time from samples with information (labels) to construct a data set and estimating a result value by applying an algorithm obtained through learning in this way, compared with conventional measurement techniques that are applied by devising formulas or methods that directly extract features for a long time by experts in related fields in order to extract effective features.
    Type: Application
    Filed: July 13, 2018
    Publication date: September 16, 2021
    Applicant: I-SENS, INC.
    Inventors: Seok-Won LEE, Byeong Keun KANG, Myeongho LEE, Hakhyun NAM, Hyeonseok LEE
  • Patent number: 10969378
    Abstract: The present invention relates to a strip ejection apparatus for a blood glucose meter, wherein: an ejector block moving to eject a measurement strip is received in the space inside a housing, whereby it is possible to make the apparatus compact, thereby enhancing space efficiency of the blood glucose meter; components can be mounted on a PCB of the blood glucose meter in units of modules as they are, without any additional separate assembly for the components, whereby it is possible to enhance efficiency of a manufacturing process; a guide protrusion coupled with an ejection switch of the blood glucose meter is selectively formed on the upper or lower portion of the ejector block or formed on both the upper and lower portions thereof, whereby it is possible to enhance the degree of freedom in design of the mounting position of the ejection switch; and the strip ejection apparatus can be applied to various types of blood glucose meters so that it is possible to standardize the type of strip ejection apparatus,
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: April 6, 2021
    Assignee: I-SENS, INC.
    Inventors: Kyungchul Chae, Hyunho Choi, Goangyel Ryu, Geunsig Cha, Hakhyun Nam
  • Publication number: 20210015431
    Abstract: An artificial neural network deep learning-based analyte analysis system utilizing a system is provided.
    Type: Application
    Filed: April 6, 2018
    Publication date: January 21, 2021
    Applicant: I-SENS, INC.
    Inventors: Byeong Keun KANG, Myeongho LEE, Seok-Won LEE, Hakhyun NAM, Seonghun CHA
  • Patent number: 10890557
    Abstract: The present disclosure relates to an electron transfer mediator comprising the osmium complex or a salt thereof, a reagent composition for an electrochemical biosensor, and an electrochemical biosensor, where the osmium compound or its salt maintains a stable oxidation-reduction form for an extended time period, a capacity to react with oxidoreductase being capable of performing the redox reaction of the target analytes, and no effect of oxygen partial pressure.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: January 12, 2021
    Assignee: I-SENS, INC.
    Inventors: In Jun Yoon, Jae Ho Shin, Yeon Ho Jung, Geun Sig Cha, Hakhyun Nam
  • Publication number: 20200278314
    Abstract: An apparatus for measuring a concentration of an analyte in a bio-sample using an electrochemical bio-sensor, includes a connector with a sample cell in which an oxidation/reduction enzyme and an electron transfer mediator are fixed and a working electrode and an counter electrode are provided; a digital-to-analog converter circuit configured to apply a constant DC voltage to start the oxidation/reduction reaction of the analyte, proceed with an electron transfer reaction, and apply a ?-step ladder-type perturbation potential for fluctuating a potential of the sample cell after applying the constant DC voltage; and a microcontroller configured to control the digital-to-analog converter circuit and directly obtain a concentration value of the analyte from a calibration equation using the ?-step ladder-type perturbation potential.
    Type: Application
    Filed: May 18, 2020
    Publication date: September 3, 2020
    Inventors: Geun Sig CHA, Hakhyun NAM, Seok-Won LEE, Sung Hyuk CHOI, Youngjea KANG, Myeongho LEE, Ho Dong PARK, Sung Pil CHO
  • Patent number: 10690619
    Abstract: A method for measuring a concentration of an analyte in a bio-sample using an electrochemical bio-sensor according to an exemplary embodiment of the present invention is characterized by a step of obtaining predetermined features from induced currents obtained by applying a DC voltage according to chronoamperometry in which, after a whole blood sample is injected to the electrochemical bio-sensor, a concentration of an analyte is obtained from an induced current obtained by applying a DC voltage for a certain time and from all induced currents obtained by further applying several step-ladder perturbation potentials for a short time subsequent to the DC voltage for the certain time, and is also characterized by minimization of a measurement error caused by a hindering material by forming a calibration equation by combining the at least one feature in a function and optimizing various conditions of the bio-sample through DeletedTextsmultivariable analysis.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: June 23, 2020
    Assignee: I-SENS, INC.
    Inventors: Geun Sig Cha, Hakhyun Nam, Seok-Won Lee, Sung Hyuk Choi, Youngjea Kang, Myeongho Lee, Ho Dong Park, Sung Pil Cho
  • Publication number: 20190242910
    Abstract: The present invention relates to a kit for quantitative analysis of glycated hemoglobin (HbA1c), and the kit for quantitative analysis of HbA1c according to the present invention has excellent long-term stability of an enzyme reagent and thus has an effect of easily overcoming the disadvantages of the conventional reagents used in enzyme assays (e.g., storage, accuracy, portability, convenience of use, etc.).
    Type: Application
    Filed: August 10, 2017
    Publication date: August 8, 2019
    Inventors: Dongxuan Shen, Jihoon Kim, Joo Young Cho, Kap Soo Park, Hyeong Eun Kim, Hyun Kyu Cho, Seok Won Lee, Hakhyun Nam, Geun Sig Cha
  • Publication number: 20190033285
    Abstract: The present invention relates to a strip ejection apparatus for a blood glucose meter, wherein: an ejector block moving to eject a measurement strip is received in the space inside a housing, whereby it is possible to make the apparatus compact, thereby enhancing space efficiency of the blood glucose meter; components can be mounted on a PCB of the blood glucose meter in units of modules as they are, without any additional separate assembly for the components, whereby it is possible to enhance efficiency of a manufacturing process; a guide protrusion coupled with an ejection switch of the blood glucose meter is selectively formed on the upper or lower portion of the ejector block or formed on both the upper and lower portions thereof, whereby it is possible to enhance the degree of freedom in design of the mounting position of the ejection switch; and the strip ejection apparatus can be applied to various types of blood glucose meters so that it is possible to standardize the type of strip ejection apparatus,
    Type: Application
    Filed: December 30, 2016
    Publication date: January 31, 2019
    Inventors: Kyungchul CHAE, Hyunho CHOI, Goangyel RYU, Geunsig CHA, Hakhyun NAM
  • Patent number: 10125384
    Abstract: The present invention relates to a stabilizing composition useful for improving the stability of reagent for redox reaction, and a reagent composition for redox reaction having an improved stability. The reagent composition for redox reaction can be applied for a reagent for electrochemical biosensor.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: November 13, 2018
    Assignee: I-SENS. INC.
    Inventors: Sung-Kwon Jung, Moon Hwan Kim, Eun Hye Im, Myeongho Lee, Ung Ki Lee, Geun Sig Cha, Hakhyun Nam
  • Patent number: 10000785
    Abstract: A composition of redox-reagent containing metal-containing complex and thionine or its derivative as electron transfer mediator for use in an electrochemical biosensor, and a biosensor containing the same are provided. With the increase in reaction rate between redox enzyme-thionine (or its derivative)-metal-containing complex in the composition of redox-reagent containing metal-containing complex and thionine or its derivative, glucose detection efficiency markedly increases, and the composition is hardly influenced from high humidity and interfering substances. Accordingly, the composition of redox-reagent is useful in fabricating an electrochemical biosensor for detecting glucose in blood.
    Type: Grant
    Filed: September 25, 2012
    Date of Patent: June 19, 2018
    Assignee: I-SENS, INC.
    Inventors: Sung-kwon Jung, Moon Hwan Kim, Myeong-Ho Lee, Ung-Ki Lee, Yeon-Ho Jung, Han-Be Park, Hakhyun Nam, Geun Sig Cha
  • Publication number: 20170350850
    Abstract: The present disclosure relates to an electron transfer mediator comprising the osmium complex or a salt thereof, a reagent composition for an electrochemical biosensor, and an electrochemical biosensor, where the osmium compound or its salt maintains a stable oxidation-reduction form for an extended time period, a capacity to react with oxidoreductase being capable of performing the redox reaction of the target analytes, and no effect of oxygen partial pressure.
    Type: Application
    Filed: December 31, 2015
    Publication date: December 7, 2017
    Applicant: I-SENS, INC.
    Inventors: In Jun YOON, Jae Ho SHIN, Yeon Ho JUNG, Geun Sig CHA, Hakhyun NAM
  • Patent number: 9753004
    Abstract: The present invention relates to an electrochemical biosensor with improved hematocrit measurement accuracy for measuring blood glucose. According to the present invention, an electrochemical biosensor including a first electrode part for correcting a measured hematocrit value and a second electrode part for measuring a glucose concentration is effective in improving accuracy of a measured hematocrit value and in more improving accuracy of a measured blood glucose concentration using the measured hematocrit values for correction, because an insulation cover is made thinner than a working electrode and an auxiliary electrode, so that areas of a first working electrode and a first auxiliary electrode of the first electrode part exposed to a blood sample become equal; a distance between the first working electrode and the second working electrode becomes constant; and electrode areas are maintained constantly by the insulation cover even when a positioning error occurs during printing.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: September 5, 2017
    Assignee: I-Sens, Inc.
    Inventors: Myeong Ho Lee, Moon Hwan Kim, Ung Ki Lee, Han Be Park, Sung-Kwon Jung, Hakhyun Nam, Geun Sig Cha
  • Patent number: 9702842
    Abstract: Provided are an amperometric sensor and device for electrochemically quantifying nitrosothiol (RSNO), which is associated with storage and delivery of nitric oxide (NO) in the human body. The amperometric sensor for measuring a concentration of RSNO includes an electrode configured to measure an electric current generated by an oxidation reaction of NO, and a means configured to start and stop photo-induced decomposition of RSNO. Here, the electric current is measured by the oxidation reaction of NO before and after the photo-induced decomposition of RSNO. The amperometric sensor may measure separate signals of RSNO and NO, which are present in the sample at the same time, using one electrode, thereby preventing an inhibition action caused by NO during the measurement of RSNO. Also, the amperometric sensor is simple in structure and easy to manufacture and may be applied to manufacture of a small electrode, and thus may be developed as a sensor for in vivo measurements.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: July 11, 2017
    Assignee: I-SENS, INC.
    Inventors: Sung A Hong, Da Yeon Sung, Jun Hee Han, Jea Hun Song, Hakhyun Nam, Geun Sig Cha, Jae Ho Shin
  • Patent number: 9512458
    Abstract: Disclosed is an electrochemical biosensor having a sample introduction channel in which an insulator is employed to introduce a small amount of a sample uniformly and accurately and to adjust an area of a working electrode, thereby guaranteeing the accurate quantitative analysis of a sample. Provided with a sample collection barrier at a sample entrance, the biosensor allows a sample to be introduced at higher accuracy and to be analyzed with higher reproducibility and reliability.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: December 6, 2016
    Assignee: I-SENS, INC.
    Inventors: Gang Cui, Jae Hyun Yoo, Ju Yong Kim, Keun Ki Kim, Moon Hwan Kim, Hakhyun Nam, Geun Sig Cha
  • Patent number: 9435792
    Abstract: Disclosed is a hemolysis reagent composition for the quantitative analysis of glycated hemoglobin (HbAlc) via an enzymatic method. The hemolysis reagent compositions of the present invention containing a zwitterionic surfactant and a nitrous compound considerably accelerate hemolysis rate due to the presence of the zwitterionic surfactant, and also induce the N-terminal ?-chain of hemoglobin released by hemolysis to be exposed to the outside of the hemoglobin molecule and assists the participation of a greater number of molecules in the reaction, thereby improving reaction sensitivity and reaction rate of the glycated hemoglobin, and the nitrous compound makes the protein structure of the hemoglobin flexibly modified so that the amino acid sequence of the N-terminal ?-chain of hemoglobin can be readily cut off, thereby significantly reducing the entire time required for the measurement and improving the accuracy of the measurement.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 6, 2016
    Assignee: I-SENS, INC.
    Inventors: Dongxuan Shen, Joo Young Cho, Kap Soo Park, Geun Sig Cha, Hakhyun Nam
  • Patent number: 9351678
    Abstract: A lancet holder includes a holder body having a lancet seat at one end to mount a lancet and receiving the lancet and elastic fixing portions arranged in pairs to face each other on the inner side of the holder body so that the lancet received in the holder body is vertically held, and elastically fixing the lancet.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: May 31, 2016
    Assignee: I-SEN, INC.
    Inventors: Geun Sig Cha, Hakhyun Nam, Eun-Jong Cha, Kyung-Ah Kim
  • Patent number: 9316655
    Abstract: The present invention relates to a biochemical analysis cartridge having improved operability. More particularly, the present invention provides a biochemical analysis cartridge including an insertion-type sample cartridge and a reaction cartridge receiving the insertion-type sample cartridge, in which, as the sample cartridge is inserted into the reaction cartridge, a reaction solution chamber moves toward a broken part of a covertape so as to automatically supply the reaction solution stored in the chamber. The biochemical analysis cartridge having improved operability according to the present invention can induce the mixing between a sample and a reaction solution by simply inserting them into the reaction cartridge and a reaction thereafter, thereby minimizing the process of a measurer to intervene in the assay, and subsequently improving user convenience and operability.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: April 19, 2016
    Assignee: I-SENS, INC.
    Inventors: Geun Sig Cha, Hakhyun Nam, Dongxuan Shen, Joo Young Cho, Jihoon Kim