Patents by Inventor David Michael Pettigrew

David Michael Pettigrew 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).

  • Analyte extraction apparatus and method
    Patent number: 9068997
    Abstract: Disclosed is an apparatus for automatically extracting i2,6-diisopropylphenol (Propofol), from a complex sample matrix comprising cellular material, e.g.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: June 30, 2015
    Assignee: SPHERE MEDICAL LIMITED
    Inventors: David Michael Pettigrew, Bo Liu, Peter Georg Laitenberger, Stephen Bates
  • Analyte detection method
    Patent number: 9068996
    Abstract: Disclosed is a method of determining the presence of an analyte of interest by means of a detection of a reaction product between the analyte of interest and a reactant, the method comprising extracting the analyte of interest from a complex sample matrix; transferring the analyte of interest to an initial reaction mixture; performing a background measurement on the initial reaction mixture comprising at most a negligible concentration of the reaction product, wherein the reaction conditions present in said initial reaction mixture at least reduce the reaction rate of the formation of the reaction product such that the background measurement can be performed without a measurable change in said negligible concentration; altering the reaction conditions in the initial reaction mixture to accelerate said reaction rate; continuing said reaction until the concentration of the reaction product has stabilized; performing a second measurement on the resultant reaction mixture to obtain a signal correlated to said con
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: June 30, 2015
    Assignee: SPHERE MEDICAL LIMITED
    Inventors: David Michael Pettigrew, Peter Georg Laitenberger, Bo Liu
  • ANALYTE EXTRACTION APPARATUS AND METHOD
    Publication number: 20130316464
    Abstract: Disclosed is an apparatus for automatically extracting i2,6-diisopropylphenol (Propofol), from a complex sample matrix comprising cellular material, e.g.
    Type: Application
    Filed: October 11, 2011
    Publication date: November 28, 2013
    Inventors: David Michael Pettigrew, Bo Liu, Peter Georg Laitenberger, Stephen Bates
  • ANALYTE DETECTION METHOD
    Publication number: 20130302781
    Abstract: Disclosed is a method of determining the presence of an analyte of interest by means of a detection of a reaction product between the analyte of interest and a reactant, the method comprising extracting the analyte of interest from a complex sample matrix; transferring the analyte of interest to an initial reaction mixture; performing a background measurement on the initial reaction mixture comprising at most a negligible concentration of the reaction product, wherein the reaction conditions present in said initial reaction mixture at least reduce the reaction rate of the formation of the reaction product such that the background measurement can be performed without a measurable change in said negligible concentration; altering the reaction conditions in the initial reaction mixture to accelerate said reaction rate; continuing said reaction until the concentration of the reaction product has stabilized; performing a second measurement on the resultant reaction mixture to obtain a signal correlated to said con
    Type: Application
    Filed: October 11, 2011
    Publication date: November 14, 2013
    Applicant: Sphere Medical Limited
    Inventors: David Michael Pettigrew, Peter Georg Laitenberger, Bo Liu