Patents by Inventor Stephen H. Mastin

Stephen H. Mastin 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).

  • METHODS AND APPARATUSES FOR DETECTING ANALYTES
    Publication number: 20110098590
    Abstract: An apparatus for measuring a quantity of an analyte, such as an aldehyde, contained in a breath sample includes a breath collection device and a measurement device. The breath collection device includes a breath inlet area, a breath outlet area, and a reaction chamber. The reaction chamber can include a reagent that is colorimetrically reactive with one or more aldehydes. The measurement device includes a light emitting device and a light measuring device and is configured to provide a quantitative value indicative of the amount of aldehydes present in the breath sample.
    Type: Application
    Filed: October 26, 2010
    Publication date: April 28, 2011
    Inventors: Ian Garbutt, David Urman, John Hunt, Stephen H. Mastin, Wes Spiegel, Chris Marsh
  • Fluorescent detection method based on enzyme activated conversion of a fluorophore precursor substrate
    Patent number: 5017475
    Abstract: Methods are provided for the fluorescent detection of an analyte of interest wherein an amine-substituted, ortho-fused pyrazine fluorophore, with neither nitrogen of the pyrazine ring being fused or substituted, is produced by enzymatic oxidation of a fluorophore precursor substrate which comprises a nitrogen-substituted, cyclic compound. Also provided are novel fluorophore-labelled compounds.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: May 21, 1991
    Assignee: Microbiological Associates, Inc.
    Inventors: Richard A. Harte, Stephen H. Mastin