Patents by Inventor Graham Hearn

Graham Hearn 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).

  • Publication number: 20070090049
    Abstract: A solvent extraction process is disclosed. The process includes using an organic solvent that contains a non-ionic extractant and a conductivity enhancer that increases the electrical conductivity of the solvent to reduce build-up of static electricity in the process and thereby reduce the electrostatic discharge hazard of the solvent to an adequate fire safety level.
    Type: Application
    Filed: April 16, 2004
    Publication date: April 26, 2007
    Applicant: WMC RESOURCES LIMITED
    Inventors: Graham Hearn, Bruce Day, Bruce Wedderbum, Christopher Wroblewski
  • Patent number: 5585426
    Abstract: A process for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The resin powder comprises (i) a thermosetting or thermoplastic resin and (ii) an electrostatic property modifying agent (polyalkylene ether, polyalkylene glycol, polyethoxylated stearyl alcohol) incorporated in the resin or on the surface of the resin. The methods of application of the powder involves charging the powder by electrical induction/conduction and spraying the charged powder onto a grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: December 17, 1996
    Assignee: Nexus Corporation
    Inventors: Barbara E. Williams, Ian Harpur, Graham Hearn
  • Patent number: 5518546
    Abstract: An apparatus for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The apparatus comprises a device for charging the powder by electrical induction/conduction such that the powder particles have a resistivity of from about 10.sup.9 to about 10.sup.13 ohm.meters at 20 percent relative humidity and spraying the charged powder onto an grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: May 21, 1996
    Assignee: eNexus Corporation
    Inventors: Barbara E. Williams, Ian Harpur, Graham Hearn, John F. Hughes