Patents by Inventor Phil J. Duhon

Phil J. Duhon 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 removing scum from a liquid surface
    Patent number: 4618430
    Abstract: Waste matter contained in a liquid is removed therefrom by introducing the liquid into a cell and introducing gas into the liquid to float waste matter to the liquid surface in the form of a floating scum. Gas nozzles situated adjacent the liquid surface are oriented to eject streams of pressurized gas across the liquid surface to blow scum into a waste outlet disposed adjacent the liquid surface. The nozzles are vertically adjustable to conform to different liquid surface levels.
    Type: Grant
    Filed: November 6, 1984
    Date of Patent: October 21, 1986
    Assignee: Engineering Specialties, Inc.
    Inventors: Uncas B. Favret, Jr., Phil J. Duhon