Patents by Inventor Robert Graifman

Robert Graifman 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).

  • Filter Regeneration Using Plasma
    Publication number: 20080127993
    Abstract: An emission control device, such as a filter, is regenerated by exposure to plasma. Plasma breaks down carbon-based residues, such as soot, to enable the filter to be easily cleaned and regenerated without subjecting the filter to heat-related stress associated with thermal regeneration methods. Secondary plasma generation is used to overcome impediments caused by the presence of a metallic housing and/or metal-containing materials such as a washcoat or mesh in the filter.
    Type: Application
    Filed: May 8, 2007
    Publication date: June 5, 2008
    Applicant: TOTALCAT GROUP, INC.
    Inventors: Robert Graifman, Stephen L. Kaplan, Gerald B. Smith