Patents by Inventor John Tagliamonte

John Tagliamonte 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).

  • Electroporation cell with arc prevention/reduction
    Patent number: 6258592
    Abstract: An electroporation system and method for directing high-voltage currents to a suspension of cells contained in a cuvette. A high-voltage switch controls the coupling of a charge control to a high-voltage capacitor and, additionally, controls the coupling of the high-voltage capacitor to the cuvette. A current diverter diverts current away from the sample whenever an arc condition commences or a low sample resistance is detected across the cuvette. The current diverter includes a current diverter switch, which is triggered when a sense resistor measures a second predetermined voltage indicative of an arc-over event (or a low sample resistance condition).
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: July 10, 2001
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Charles W. Ragsdale, John Tagliamonte