Patents by Inventor Stephen John Fielding

Stephen John Fielding 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).

  • Sampling of a mixture to be analyzed for particle size/particle size distribution
    Patent number: 6286376
    Abstract: A particle size distribution analysis sample dilution apparatus in which a sample consisting of a batch of a slurry of particles is deposited on an inclined plate of a progressive sample delivery system from which a continuous supply of water progressively washes off the sample and dilutes it. The initially diluted sample is further diluted with water continuously supplied in a funnel from which the further diluted sample passes under gravity along a conduit to a particle size distribution analyzer through which the diluted sample flows continuously. The conduit may include a mixing chamber to which water is continuously supplied to further dilute the sample prior to analysis.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: September 11, 2001
    Assignee: Malvern Instruments Limited
    Inventors: Gregory Paul Davidson, Stephen John Fielding, Robert James Henry Jennings