Patents by Inventor Stephen Ray Preston

Stephen Ray Preston 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).

  • Electrostatic precipitator
    Patent number: 7361212
    Abstract: An electrostatic precipitator is detailed. The precipitator includes a conduit for the passage of particles in an air flow and a generator of an electrostatic field substantially orthogonal to the air flow, and an ion supply, capable of charging the particles, in which the generator includes a point electrode and a two dimensional surface electrode. The plane surface electrode includes an ion source and the point electrode includes a counter electrode and the counter electrode is earthed.
    Type: Grant
    Filed: November 11, 2003
    Date of Patent: April 22, 2008
    Assignee: The Secretary of State for Defence
    Inventors: James McDonald Clark, Timothy Graham Foat, Maurice Daverell Walker, Stephen Ray Preston