Patents by Inventor Tianmei Ouyang

Tianmei Ouyang 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: 20140141487
    Abstract: Embodiments of the invention include analyte-responsive compositions and electrochemical analyte sensors having a sensing layer that includes an analyte-responsive enzyme and a cationic polymer. Also provided are systems and methods of making the sensors and using the electrochemical analyte sensors in analyte monitoring.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Tianmei Ouyang, Zenghe Liu
  • Publication number: 20140026646
    Abstract: Provided are sensors for determining the concentration of an analyte in a sample fluid. In certain embodiments, the sensors include conductive particles and exhibit improved uniformity of distribution of one or more sensing chemistry components, increased effective working electrode surface area, and/or reduced entry of interfering components into a sample chamber of the sensor. Methods of using and manufacturing the sensors are also provided.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Inventors: Benjamin J. Feldman, Zenghe Liu, Tianmei Ouyang, Suyue Qian
  • Patent number: 8636884
    Abstract: Embodiments of the invention include analyte-responsive compositions and electrochemical analyte sensors having a sensing layer that includes an analyte-responsive enzyme and a cationic polymer. Also provided are systems and methods of making the sensors and using the electrochemical analyte sensors in analyte monitoring.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: January 28, 2014
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Tianmei Ouyang, Zenghe Liu
  • Patent number: 8515518
    Abstract: Devices and methods for determining the concentration of an analyte are provided. Embodiments of the subject devices include analyte monitoring systems that include an analyte sensor capable of providing clinically accurate analyte data without a substantial time delay after operably positioning the sensor in a patient. Embodiments of the subject methods include operably positioning an analyte sensor in a patient and obtaining clinically accurate analyte data without a substantial time delay after the positioning. Also provided are systems and kits for use in analyte monitoring.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: August 20, 2013
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Tianmei Ouyang, Zenghe Liu, Hyun Cho, Benjamin J. Feldman
  • Publication number: 20120330120
    Abstract: An analyte sensor including an antiglycolytic agent or a precursor thereof and a chelating agent that stabilizes the antiglycolytic agent positioned proximate to the working electrode of the sensor. Also provided are systems and methods of using the electrochemical analyte sensors in analyte monitoring.
    Type: Application
    Filed: April 2, 2012
    Publication date: December 27, 2012
    Inventors: Tianmei Ouyang, Zenghe Liu, Hyun Cho, Benjamin J. Feldman
  • Publication number: 20120296186
    Abstract: Embodiments of the present disclosure relate to analyte determining methods and devices (e.g., electrochemical analyte monitoring systems) that have a membrane with low temperature sensitivity. The sensing layer is disposed on a working electrode of in vivo and/or in vitro analyte sensors, e.g., continuous and/or automatic in vivo monitoring using analyte sensors and/or test strips. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Application
    Filed: December 20, 2011
    Publication date: November 22, 2012
    Inventors: Tianmei Ouyang, Zenghe Liu, Yohannes Goti, Benjamin J. Feldman, Udo Hoss
  • Patent number: 8268143
    Abstract: The present invention provides an electrochemical sensor having a sensing chemistry that operates substantially free of any “oxygen effect”. The electrochemical sensors are useful in determining the level of an analyte in a biological sample from a subject. The present invention also provides sensor assemblies including the electrochemical sensors as well as methods of using the same.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: September 18, 2012
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Zenghe Liu, Tianmei Ouyang, Hyun Cho, Yohannes Goti, Benjamin J. Feldman, Fei Mao, Adam Heller
  • Patent number: 8160670
    Abstract: An analyte sensor including an antiglycolytic agent or a precursor thereof and a chelating agent that stabilizes the antiglycolytic agent positioned proximate to the working electrode of the sensor. Also provided are systems and methods of using the electrochemical analyte sensors in analyte monitoring.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: April 17, 2012
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Tianmei Ouyang, Zenghe Liu, Hyun Cho, Benjamin J. Feldman
  • Patent number: 8155722
    Abstract: The present application provides Ag/AgCl based reference electrodes having an extended lifetime that are suitable for use in long term amperometric sensors. Electrochemical sensors equipped with reference electrodes described herein demonstrate considerable stability and extended lifetime in a variety of conditions.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: April 10, 2012
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Zenghe Liu, Tianmei Ouyang
  • Publication number: 20120078070
    Abstract: The present application provides redox polymer based reference electrodes having an extended lifetime that are suitable for use in long term amperometric sensors. Electrochemical sensors equipped with reference electrodes described herein demonstrate considerable stability and extended lifetime in a variety of conditions.
    Type: Application
    Filed: April 20, 2011
    Publication date: March 29, 2012
    Inventors: Zenghe Liu, Benjamin J. Feldman, Christopher Thomas, Tianmei Ouyang
  • Publication number: 20120028283
    Abstract: Embodiments of the present disclosure relate to analyte determining methods and devices (e.g., electrochemical analyte monitoring systems) that have a membrane structure with an analyte permeability that is substantially temperature independent. The devices also include a sensing layer disposed on a working electrode of in vivo analyte sensors, e.g., continuous and/or automatic in vivo monitoring using analyte sensors and/or test strips. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 2, 2012
    Inventors: Udo Hoss, Benjamin J. Feldman, Tianmei Ouyang
  • Publication number: 20110046466
    Abstract: Generally, embodiments of the invention relate to analyte determining methods and devices (e.g., electrochemical analyte monitoring systems) that have improved uniformity of distribution of one or more components, improved stability, and improved response time of the sensor by inclusion of a nanomaterial, such as inert inorganic nanomaterials, where the components are disposed proximate to a working electrode of in vivo and/or in vitro analyte sensors, e.g., continuous and/or automatic in vivo monitoring using analyte sensors and/or test strips. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Application
    Filed: August 19, 2009
    Publication date: February 24, 2011
    Inventors: Benjamin J. Feldman, Tianmei Ouyang, Zenghe Liu, Brian Cho
  • Publication number: 20100213057
    Abstract: Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Application
    Filed: February 26, 2009
    Publication date: August 26, 2010
    Inventors: BENJAMIN FELDMAN, ZENGHE LIU, TIANMEI OUYANG
  • Publication number: 20100213082
    Abstract: Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.
    Type: Application
    Filed: March 4, 2010
    Publication date: August 26, 2010
    Inventors: Benjamin Feldman, Zenghe Liu, Tianmei Ouyang
  • Publication number: 20100065441
    Abstract: Embodiments of the invention include analyte-responsive compositions and electrochemical analyte sensors having a sensing layer that includes an analyte-responsive enzyme and a cationic polymer. Also provided are systems and methods of making the sensors and using the electrochemical analyte sensors in analyte monitoring.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Inventors: Benjamin J. Feldman, Tianmei Ouyang, Zenghe Liu
  • Publication number: 20090294301
    Abstract: The present application provides Ag/AgCl based reference electrodes having an extended lifetime that are suitable for use in long term amperometric sensors. Electrochemical sensors equipped with reference electrodes described herein demonstrate considerable stability and extended lifetime in a variety of conditions.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 3, 2009
    Inventors: BENJAMIN J. FELDMAN, ZENGHE LIU, TIANMEI OUYANG
  • Publication number: 20090294307
    Abstract: The present application provides redox polymer based reference electrodes having an extended lifetime that are suitable for use in long term amperometric sensors. Electrochemical sensors equipped with reference electrodes described herein demonstrate considerable stability and extended lifetime in a variety of conditions.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 3, 2009
    Inventors: Zenghe Liu, Benjamin J. Feldman, Christopher Thomas, Tianmei Ouyang
  • Publication number: 20090099434
    Abstract: The present invention provides an electrochemical sensor having a sensing chemistry that operates substantially free of any “oxygen effect”. The electrochemical sensors are useful in determining the level of an analyte in a biological sample from a subject. The present invention also provides sensor assemblies including the electrochemical sensors as well as methods of using the same.
    Type: Application
    Filed: July 14, 2008
    Publication date: April 16, 2009
    Inventors: Zenghe Liu, Tianmei Ouyang, Hyun Cho, Yohannes Goti, Benjamin J. Feldman, Fei Mao, Adam Heller
  • Publication number: 20090095642
    Abstract: Enzyme-based electrochemical sensors comprising transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators and include substituted or unsubstituted pyridyl-imidazole ligands. Transition metal complexes attached to polymeric backbones are also described.
    Type: Application
    Filed: April 14, 2008
    Publication date: April 16, 2009
    Inventors: Tianmei Ouyang, Zenghe Liu, John LaTour, Ting Chen, Lam N. Tran, Benjamin Feldman, Fei Mao, Adam Heller
  • Publication number: 20090018425
    Abstract: An analyte sensor including an antiglycolytic agent or a precursor thereof and a chelating agent that stabilizes the antiglycolytic agent positioned proximate to the working electrode of the sensor. Also provided are systems and methods of using the electrochemical analyte sensors in analyte monitoring.
    Type: Application
    Filed: July 3, 2008
    Publication date: January 15, 2009
    Inventors: TIANMEI OUYANG, ZENGHE LIU, HYUN CHO, BENJAMIN J. FELDMAN