Patents by Inventor Drew Hoff

Drew Hoff 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).

  • Corona ion generating method and apparatus for the manipulation of molecules and biological cells
    Patent number: 6929949
    Abstract: The present invention provides a method and apparatus adapted to facilitate the entry of a preselected molecule into the intracellular space of a cellular sample through the use of ions generated by a corona charge source. With the present method and apparatus, molecules are manipulated within cells and in the extracellular space surrounding the cells. Manipulation enhances the permeability of cell barriers to allow the subsequent introduction of molecules of interest into the interior of a cell.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: August 16, 2005
    Assignee: University of South Florida
    Inventors: Drew Hoff, Mark J. Jaroszeski, Richard Gilbert, Richard Heller
  • Reverse osmosis (“RO”) membrane system incorporating function of flow channel spacer
    Patent number: 6632357
    Abstract: A permeable membrane system (10) for the separation of fluid components includes a laminated composition (12) having two sheets (14 and 16) formed from a polymer and positioned adjacent one another to form a fluid passage (18) therebetween. The outside surfaces (20 and 22) of the sheets (14 and 16) are permeable to allow fluid flow from the outside surface (20 and 22) to the fluid passage (18). The outside surface (20 and 22) of the laminated composition (12) includes a plurality of embossed islands spaced from one another to define feed pathways (26) around and between the embossed islands.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: October 14, 2003
    Assignee: University of South Florida
    Inventors: Marilyn Barger, Drew Hoff, Robert P. Carnahan, Richard A. Gilbert