Patents by Inventor Fei Mao

Fei Mao 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: 20160175268
    Abstract: A composition for administration to a subject, such as oral administration to a subject, for example, has been provided. Such a composition may comprise at least one magnesium-counter ion compound. A magnesium-counter ion composition described herein may be useful for any of a variety of applications provided herein, such as maintaining, enhancing, and/or improving health, nutrition, and/or another condition of a subject, and/or cognitive, learning, and/or memory function. A magnesium-counter ion composition provided herein may be useful for administration to a subject presenting magnesium deficiency, mild cognitive impairment, Alzheimer's disease, attention deficit hyperactivity disorder, ALS, Parkinson's disease, diabetes, migraine, anxiety disorder, mood disorder, and/or hypertension. A kit, method, and other associated technology are also provided.
    Type: Application
    Filed: July 22, 2015
    Publication date: June 23, 2016
    Inventors: Guosong Liu, Fei Mao
  • Patent number: 9341591
    Abstract: A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: May 17, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Adam Heller, Ephraim Heller, Fei Mao, Joseph A. Vivolo, Jeffery V. Funderburk, Fredric C. Colman, Rajesh Krishnan
  • Patent number: 9320467
    Abstract: Novel transition metal complexes of iron, cobalt, ruthenium, osmium, and vanadium are described. The transition metal complexes can be used as redox mediators in enzyme based electrochemical sensors. In such instances, transition metal complexes accept electrons from, or transfer electrons to, enzymes at a high rate and also exchange electrons rapidly with the sensor. The transition metal complexes include at least one substituted or unsubstituted biimidazole ligand and may further include a second substituted or unsubstituted biimidazole ligand or a substituted or unsubstituted bipyridine or pyridylimidazole ligand. Transition metal complexes attached to polymeric backbones are also described.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: April 26, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Fei Mao, Adam Heller
  • Patent number: 9316609
    Abstract: A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: April 19, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Adam Heller, Ephraim Heller, Fei Mao, Joseph A. Vivolo, Jeffery V. Funderburk, Fredric C. Colman, Rajesh Krishnan
  • Patent number: 9291592
    Abstract: A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: March 22, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Adam Heller, Ephraim Heller, Fei Mao, Joseph A. Vivolo, Jeffery V. Funderburk, Fredric C. Colman, Rajesh Krishnan
  • Publication number: 20160033520
    Abstract: The present invention relates to fluorescent dyes in general. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Application
    Filed: June 8, 2015
    Publication date: February 4, 2016
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Publication number: 20160024067
    Abstract: The invention provides compounds, including fluorescent nucleic acid dyes, and methods for use including nucleic acid detection, nucleic acid amplification reactions, and high-resolution melt curve analysis. Further provided are kits, instruments and systems comprising compounds of the invention or adapted for use with compounds of the invention or other nucleic acid dyes.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 28, 2016
    Inventors: Fei Mao, Chingying Cheung, Wal-Yee Leung, Sarah Lynn Windler, Lori M. Roberts
  • Patent number: 9232916
    Abstract: Novel membranes comprising various polymers containing heterocyclic nitrogen groups are described. These membranes are usefully employed in electrochemical sensors, such as amperometric biosensors. More particularly, these membranes effectively regulate a flux of analyte to a measurement electrode in an electrochemical sensor, thereby improving the functioning of the electrochemical sensor over a significant range of analyte concentrations. Electrochemical sensors equipped with such membranes are also described.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: January 12, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Fei Mao, Hyun Cho
  • Patent number: 9234863
    Abstract: A sensor utilizing a non-leachable or diffusible redox mediator is described. The sensor includes a sample chamber to hold a sample in electrolytic contact with a working electrode, and in at least some instances, the sensor also contains a non-leachable or a diffusible second electron transfer agent. The sensor and/or the methods used produce a sensor signal in response to the analyte that can be distinguished from a background signal caused by the mediator. The invention can be used to determine the concentration of a biomolecule, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. An enzyme capable of catalyzing the electrooxidation or electroreduction of the biomolecule is typically provided as a second electron transfer agent.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: January 12, 2016
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Benjamin J. Feldman, Adam Heller, Ephraim Heller, Fei Mao, Joseph A. Vivolo, Jeffery V. Funderburk, Fredric C. Colman, Rajesh Krishnan
  • Patent number: 9222127
    Abstract: The present invention provides compositions, methods, and kits relating to the protection and deprotection of molecules comprising nucleophilic groups, such as the protection and deprotection of thermostable polymerases. Also provided are methods of performing nucleic acid amplification using polymerases protected according to the invention.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: December 29, 2015
    Assignee: Allelogic Biosciences Corporation
    Inventors: Fei Mao, Xing Xin, Wai-Yee Leung
  • Publication number: 20150366828
    Abstract: Compositions and methods that are useful for treating a subject suffering from one or more cancers are provided herein. Such compositions and methods can contain an effective amount of magnesium threonate to be used to support or improve the mental state of a subject. The composition and methods comprising magnesium threonate can also be used to support a cancer treatment.
    Type: Application
    Filed: March 14, 2014
    Publication date: December 24, 2015
    Applicant: MAGCEUTICS, INC.
    Inventors: Guosong LIU, Fei MAO
  • Patent number: 9193746
    Abstract: Luminescent metal complexes, methods of producing and/or designing same, methods of using same, and associated technology, are disclosed herein. A luminescent metal complex may be useful for a variety of applications, such as staining, detection, and/or identification, for example, of substances, such as poly(amino acids), for example. Further by way of example, a luminescent metal complex may be useful for staining, detecting, and/or identifying poly(amino acids) that are associated with any of various environments, such as a gel or a gel matrix, such as any associated with SDS-PAGE, for example, a surface environment, such as any associated with western blot, for example, and/or the like. Compositions, solutions, and kits comprising a luminescent metal complex are also disclosed herein.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: November 24, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Jie Yang
  • Patent number: 9125878
    Abstract: A composition for administration to a subject, such as oral administration to a subject, for example, has been provided. Such a composition may comprise at least one magnesium-counter ion compound. A magnesium-counter ion composition described herein may be useful for any of a variety of applications provided herein, such as maintaining, enhancing, and/or improving health, nutrition, and/or another condition of a subject, and/or cognitive, learning, and/or memory function. A magnesium-counter ion composition provided herein may be useful for administration to a subject presenting magnesium deficiency, mild cognitive impairment, Alzheimer's disease, attention deficit hyperactivity disorder, ALS, Parkinson's disease, diabetes, migraine, anxiety disorder, mood disorder, and/or hypertension. A kit, method, and other associated technology are also provided.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: September 8, 2015
    Assignee: Magceutics, Inc.
    Inventors: Guosong Liu, Fei Mao
  • Patent number: 9102835
    Abstract: Methods of using dyes and associated technology are provided. A dye, such as a monomeric dye or a dimeric dye, may be used in a nucleic acid gel staining application and/or a nucleic acid detection application. Such a dye and a salt that comprises an anion that is associated with a strong acid and a cation that is associated with a strong base may be used in such an application. A dimeric dye, such as a dimeric dye capable of forming a hairpin-like structure, may be used to stain and/or detect nucleic acids via a release-on-demand mechanism. A dimeric dye having low background fluorescence in the absence of nucleic acids and high fluorescence in the presence of nucleic acids, upon binding therewith, may be used to stain and/or detect nucleic acids.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 11, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung
  • Publication number: 20150216463
    Abstract: Novel membranes comprising various polymers containing heterocyclic nitrogen groups are described. These membranes are usefully employed in electrochemical sensors, such as amperometric biosensors. More particularly, these membranes effectively regulate a flux of analyte to a measurement electrode in an electrochemical sensor, thereby improving the functioning of the electrochemical sensor over a significant range of analyte concentrations. Electrochemical sensors equipped with such membranes are also described.
    Type: Application
    Filed: April 20, 2015
    Publication date: August 6, 2015
    Inventors: Fei Mao, Hyun Cho
  • Patent number: 9097667
    Abstract: The present invention relates to fluorescent dyes. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. In one aspect, the invention provides a compound having a maximal fluorescence excitation wavelength, wherein the compound has a structure of Formula II: F—Y=???Formula II and wherein Z— is a counterion, Y is a bridge unit permitting electron delocalization between F and ?, and F is a moiety having the structure: The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: August 4, 2015
    Assignee: BIOTIUM, INC.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung, Hye Eun Hoover
  • Publication number: 20150185182
    Abstract: The invention provides compounds, including fluorescent nucleic acid dyes, and methods for use including nucleic acid detection. Further provided are kits, instruments and systems comprising compounds of the invention or adapted for use with compounds of the invention or other nucleic acid dyes.
    Type: Application
    Filed: October 3, 2014
    Publication date: July 2, 2015
    Inventors: Fei Mao, Wai-Yee Leung, Lori M. Roberts, Patrick Gordon McGarraugh
  • Publication number: 20150126835
    Abstract: Novel membranes comprising various polymers containing heterocyclic nitrogen groups are described. These membranes are usefully employed in electrochemical sensors, such as amperometric biosensors. More particularly, these membranes effectively regulate a flux of analyte to a measurement electrode in an electrochemical sensor, thereby improving the functioning of the electrochemical sensor over a significant range of analyte concentrations. Electrochemical sensors equipped with such membranes are also described.
    Type: Application
    Filed: January 12, 2015
    Publication date: May 7, 2015
    Applicant: Abbott Diabetes Care Inc.
    Inventors: Fei Mao, Hyun Cho
  • Patent number: 9014774
    Abstract: Novel membranes comprising various polymers containing heterocyclic nitrogen groups are described. These membranes are usefully employed in electrochemical sensors, such as amperometric biosensors. More particularly, these membranes effectively regulate a flux of analyte to a measurement electrode in an electrochemical sensor, thereby improving the functioning of the electrochemical sensor over a significant range of analyte concentrations. Electrochemical sensors equipped with such membranes are also described.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: April 21, 2015
    Assignee: Abbott Diabetes Care Inc.
    Inventors: Fei Mao, Hyun Cho
  • Patent number: 9006437
    Abstract: The present invention relates to fluorescent dyes in general. The present invention provides a wide range of fluorescent dyes and kits containing the same, which are applicable for labeling a variety of biomolecules, cells and microorganisms. The present invention also provides various methods of using the fluorescent dyes for research and development, forensic identification, environmental studies, diagnosis, prognosis, and/or treatment of disease conditions.
    Type: Grant
    Filed: April 9, 2013
    Date of Patent: April 14, 2015
    Assignee: Biotium, Inc.
    Inventors: Fei Mao, Wai-Yee Leung, Ching-Ying Cheung