Patents by Inventor Edgar. H. Andrews

Edgar. H. Andrews 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).

  • Process and apparatus for cleaning and/or coating metal surfaces using electro-plasma technology
    Publication number: 20030085113
    Abstract: A process for cleaning an electrically conductive surface by arranging for the surface to form the cathode of an electrolytic cell in which the anode is maintained at a DC voltage in excess of 30 v and an electrical arc discharge (electro-plasma) is established at the surface of the workpiece by suitable adjustment of the operating parameters and the conductive medium in contact with the workpiece is an electrically conducting foam, characterised in that one or more vents are provided to allow the escape of gas from the foam-filled treatment zone.
    Type: Application
    Filed: May 11, 2001
    Publication date: May 8, 2003
    Inventors: Edgar. H. Andrews, Valerij Leontievich Steblianko, Edward O. Daigle