Patents by Inventor Chung-Chiun Liu

Chung-Chiun Liu 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).

  • Patent number: 11697807
    Abstract: A CRISPR electrochemical biosensing system (E-CRISPR) for detection of analytes includes a disposable, micro-fabricated three-electrode sensor that includes a working electrode, a counter electrode, a reference electrode, and a nonspecific ssDNA reporter with an electrochemical tag for signal transduction tethered to a surface of the working electrode; and a Cas12a-crRNA duplex that is designed to specifically recognize and cleave target nucleic acid strand based on the protospacer adjacent motif (PAM) sequence of the target and crRNA sequence, wherein the PAM recognition depends on specific 5? TTTN nucleic acid sequence located at an opposite strand of a recognition strand, and wherein only upon the recognition of the PAM sequence by the Cas protein, the Cas protein, acting as a DNA helicase, unwinds the target DNA.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: July 11, 2023
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung Chiun Liu, Yifan Dai
  • Patent number: 11255811
    Abstract: A sensor for the detection of lead includes a substrate, a working electrode formed on a surface of the substrate, a counter electrode formed on the surface of the substrate, a dielectric layer covering a portion of the working electrode and counter electrode and defining an aperture exposing other portions of the working electrode and counter electrode. The working electrode includes a metalized film with working surface and a monolayer (or bilayer) of bismuth deposited on the working surface by underpotential deposition.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: February 22, 2022
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung Chiun Liu, Yifan Dai
  • Patent number: 11125713
    Abstract: A sensor for the detection of analyte includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an antibody bioconjugated to a surface of an exposed portion of the working electrode.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: September 21, 2021
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung Chiun Liu, Yifan Dai
  • Publication number: 20210246436
    Abstract: A CRISPR electrochemical biosensing system (E-CRISPR) for detection of analytes includes a disposable, micro-fabricated three-electrode sensor that includes a working electrode, a counter electrode, a reference electrode, and a nonspecific ssDNA reporter with an electrochemical tag for signal transduction tethered to a surface of the working electrode; and a Cas12a-crRNA duplex that is designed to specifically recognize and cleave target nucleic acid strand based on the protospacer adjacent motif (PAM) sequence of the target and crRNA sequence, wherein the PAM recognition depends on specific 5? TTTN nucleic acid sequence located at an opposite strand of a recognition strand, and wherein only upon the recognition of the PAM sequence by the Cas protein, the Cas protein, acting as a DNA helicase, unwinds the target DNA,
    Type: Application
    Filed: September 30, 2020
    Publication date: August 12, 2021
    Inventors: Chung Chiun Liu, Yifan Dai
  • Publication number: 20210148913
    Abstract: A sensor for the detection of AMACR and/or PSA includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an anti-AMACR antibody and/or anti-PSA antibody bioconjugated to a surface of an exposed portion of the working electrode.
    Type: Application
    Filed: April 15, 2019
    Publication date: May 20, 2021
    Inventors: Chung Chiun Liu, Yifan Dai, Jiwei Yao, Yuan Wang
  • Patent number: 11009479
    Abstract: A sensor for the detection of HbA1c in a sample includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an anti-HbA1c antibody functionalized or chemically functionalized to a surface of an exposed portion of the working electrode.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: May 18, 2021
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung Chiun Liu, Alireza Molazemhosseini
  • Publication number: 20210102913
    Abstract: A sensor for the detection of 17?-estradiol in a sample includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an anti-estrogen receptor functionalized or chemically functionalized to a surface of an exposed portion of the working electrode.
    Type: Application
    Filed: March 29, 2018
    Publication date: April 8, 2021
    Inventors: Chung-Chiun Liu, Yifan Dai, Laurie Dudik
  • Patent number: 10935513
    Abstract: A sensor for detecting volatile organic compounds (VOCs) includes a substrate, a working electrode formed on a surface of the substrate, a counter electrode formed on the surface of the substrate, a dielectric layer covering a portion of the working electrode and counter electrode and defining an aperture exposing other portions of the working electrode and counter electrode.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: March 2, 2021
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventor: Chung Chiun Liu
  • Patent number: 10883956
    Abstract: A sensor for the detection of an analyte in a biological sample includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and a receptor functionalized or chemically functionalized to a surface of an exposed portion of the working electrode. The receptor can selectively bind to the analyte of interest and the analyte once bound is detectable by measuring the current flow between the working electrode and counter electrode.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: January 5, 2021
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventor: Chung-Chiun Liu
  • Publication number: 20200182821
    Abstract: A sensor for the detection of lead includes a substrate, a working electrode formed on a surface of the substrate, a counter electrode formed on the surface of the substrate, a dielectric layer covering a portion of the working electrode and counter electrode and defining an aperture exposing other portions of the working electrode and counter electrode. The working electrode includes a metalized film with working surface and a monolayer (or bilayer) of bismuth deposited on the working surface by underpotential deposition.
    Type: Application
    Filed: April 25, 2018
    Publication date: June 11, 2020
    Inventors: Chung Chiun LIU, Yifan Dai
  • Publication number: 20200115734
    Abstract: A detection system for determining pyruvate dehydrogenase (PDH) levels in a bodily sample includes at least one reaction solution for generating NAD+ upon combination with PDH in the bodily sample, the reaction solution including pyruvate and NADH and a biosensor for determining the level of generated NAD+.
    Type: Application
    Filed: November 5, 2019
    Publication date: April 16, 2020
    Inventor: Chung-Chiun Liu
  • Publication number: 20200018717
    Abstract: A sensor for the detection of analyte includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an antibody bioconjugated to a surface of an exposed portion of the working electrode.
    Type: Application
    Filed: March 15, 2019
    Publication date: January 16, 2020
    Inventors: Chung Chiun Liu, Yifan Dai, Stephanie Harrington, Yun Yen
  • Patent number: 10465229
    Abstract: A detection system for determining pyruvate dehydrogenase (PDH) levels in a bodily sample includes at least one reaction solution for generating NAD+ upon combination with PDH in the bodily sample, the reaction solution including pyruvate and NADH and a biosensor for determining the level of generated NAD+.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: November 5, 2019
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventor: Chung-Chiun Liu
  • Patent number: 10444180
    Abstract: A polymer electrolyte-based sensor is disclosed. The sensor includes a conductive polymer electrolyte film including water-retaining components. The water-retaining components facilitate operational conductivity of the conductive polymer electrolyte film in lower humidity environments than would be possible without the water-retaining components.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: October 15, 2019
    Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Gary W Hunter, Jennifer C Xu, Chung-Chiun Liu
  • Publication number: 20190204268
    Abstract: A non-enzymatic sensor for the detection of glucose includes a substrate, a working electrode formed on a surface of the substrate; a counter electrode formed on the surface of the substrate; a dielectric layer covering a portion of the working electrode and counter electrode and defining an aperture exposing other portions of the working electrode and counter electrode; and a cuprous oxide (Cu2O) film electrodeposited on the working electrode.
    Type: Application
    Filed: January 2, 2019
    Publication date: July 4, 2019
    Inventors: Chung Chiun Liu, Yifan Dai
  • Patent number: 10246734
    Abstract: A detection system for determining alpha-methylacyl-CoA (AMACR) levels in a bodily sample includes at least one reaction solution for generating H2O2 upon combination with AMACR in the bodily sample and a biosensor for determining a level of generated H2O2. The reaction solution includes a (2R)-2-methylacyl-CoA epimer that can be chirally inverted by AMACR to a (2S)-2-methylacyl-CoA epimer and an enzyme that carries out beta oxidation with the (2S)-2-methylacyl-CoA epimer to generate hydrogen peroxide (H2O2).
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: April 2, 2019
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung-Chiun Liu, Laurie Dudik, Po-Yuam Lin
  • Publication number: 20190072514
    Abstract: A detection system for determining lysyl oxidase-like 2 protein (LOXL2) levels in a bodily sample, includes at least one reaction solution for generating H2O2 upon combination with LOXL2 in the bodily sample, the reaction solution including lysine that can be oxidatively deaminated by LOXL2 to generate ?-aminoadipic-?-semialdehyde (allysine) and hydrogen peroxide (H2O2).
    Type: Application
    Filed: October 23, 2018
    Publication date: March 7, 2019
    Inventors: Chung-Chiun Liu, Yuan Zhang, Metini Janyasupab, Cheng-Wei Liu, Laurie Dudik
  • Publication number: 20190064102
    Abstract: A sensor for the detection of GPC-1 in a sample includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an anti-GPC-1 antibody functionalized or chemically functionalized to a surface of an exposed portion of the working electrode.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Inventors: Chung Chiun Liu, Yifan Dai
  • Patent number: 10107778
    Abstract: A detection system for determining lysyl oxidase-like 2 protein (LOXL2) levels in a bodily sample, includes at least one reaction solution for generating H2O2 upon combination with LOXL2 in the bodily sample, the reaction solution including lysine that can be oxidatively deaminated by LOXL2 to generate ?-aminoadipic-?-semialdehyde (allysine) and hydrogen peroxide (H2O2).
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: October 23, 2018
    Assignee: CASE WESTERN RESERVE UNIVERSITY
    Inventors: Chung-Chiun Liu, Yuan Zhang, Metini Janyasupab, Cheng-Wei Liu, Laurie Dudik
  • Publication number: 20180275090
    Abstract: A sensor for the detection of HbA1c in a sample includes a substrate, a working electrode and counter electrode formed on a surface of the substrate, and an anti-HbA1c antibody functionalized or chemically functionalized to a surface of an exposed portion of the working electrode.
    Type: Application
    Filed: May 7, 2018
    Publication date: September 27, 2018
    Inventors: Chung Chiun Liu, Alireza Molazemhosseini