Patents by Inventor Stephen John O'Donohue

Stephen John O'Donohue 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).

  • Evaporative light scattering detector
    Patent number: 7561268
    Abstract: An improved evaporative light scattering detector apparatus for volatile samples is provided. Conventionally incomplete evaporation of the mobile phase (solvent) cannot be achieved for volatile samples as solvent cannot be fully removed at low temperature because the vapor becomes saturated. At higher temperatures the samples evaporate without forming an aerosol. By adding a dry evaporator gas to the sample before entering a drift tube avoids saturation of the vapor and permits complete evaporation of the solvent at low temperatures.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: July 14, 2009
    Assignee: Polymer Laboratories Ltd
    Inventors: Stephen John O'Donohue, Nathan James Wrench, Paul Emil Claes