Patents by Inventor Darryl Hirst Dawson

Darryl Hirst Dawson 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).

  • Electrode and method for making electrode
    Patent number: 7790005
    Abstract: Disclosed is a gas permeable electrode comprising an electrocatalyst which is permeable to a reactant or reaction product, the electrocatalyst comprising particulate boron-doped diamond. There is also disclosed a method of making an electrocatalyst which is permeable to a reactant or reaction product, the method comprising the step of forming an electrocatalyst comprising particulate boron-doped diamond.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 7, 2010
    Assignee: Element Six Limited
    Inventors: Darryl Hirst Dawson, William Joseph Yost, III, Christopher William Ogilvie Thompson
  • FLUE GAS ANALYSER
    Publication number: 20100065442
    Abstract: A flue gas analyser for measuring the concentration of oxygen in flue gas, comprising an electrochemical oxygen sensor and water vapour removing means for reducing the relative humidity of received gas and/or nitrogen-containing-gas removing means for removing from received gas one or more gaseous species comprising nitrogen and oxygen which are either nitrogen dioxide, or formed from nitrogen dioxide in the presence of sufficient water vapour, which would otherwise lead to damage of the electrochemical oxygen sensor,
    Type: Application
    Filed: July 30, 2008
    Publication date: March 18, 2010
    Applicant: ALPHASENSE LIMITED
    Inventors: John Robert SAFFELL, Darryl Hirst DAWSON
  • FLUE GAS ANALYSER
    Publication number: 20090038962
    Abstract: A fuel gas analyzer for measuring the concentration of oxygen in fuel gas, comprising an electrochemical oxygen sensor and water vapor removing means for reducing the relative humidity of received gas and/or nitrogen-containing-gas removing means for removing from received gas one or more gaseous species comprising nitrogen and oxygen which are either nitrogen dioxide, or formed from nitrogen dioxide in the presence of sufficient water vapor, which would otherwise lead to damage of the electrochemical oxygen sensor,
    Type: Application
    Filed: July 30, 2008
    Publication date: February 12, 2009
    Applicant: ALPHASENSE LIMITED
    Inventors: John Robert SAFFELL, Darryl Hirst DAWSON
  • Semiconducting oxide gas sensors
    Patent number: 6046054
    Abstract: The selectivity of response of resistive gas sensors to specific gases or vapors is improved by the selection of specified gas-sensitive materials which are not previously known for the applications described, which include detection of hydrocarbons in the presence of CO, H.sub.2 S, SO.sub.2, chlorine, NO.sub.2, CO.sub.2 (especially in low concentrations), CFC's, ammonia, free oxygen by determination of partial pressures, and numerous organic gases and vapors.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: April 4, 2000
    Assignee: Capteur Sensors & Analysers, Ltd.
    Inventors: Peter McGeehin, Patrick Timothy Moseley, David Edward Williams, Geoffrey Stephen Henshaw, Darryl Hirst Dawson, Laura Jane Gellman