Patents by Inventor Irving A. Dean

Irving A. Dean 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).

  • Liquid treatment media regeneration apparatus and process
    Patent number: 6287474
    Abstract: A deep bed liquid treatment apparatus and process in which the liquid and a granular media is periodically agitated to create a liquid-media slurry, and outflow of the liquid and entrained contaminants is induced through a separator having an inner diameter screen with openings sufficiently small to prevent the escape of media granules. A rotor is rotated within the separator to create turbulent flow at the screen to dislodge the granules drawn onto the screen openings.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: September 11, 2001
    Assignee: Filtra-Systems Company
    Inventor: Irving A. Dean