Patents by Inventor Katherine W. Dougan, legal representative

Katherine W. Dougan, legal representative 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).

  • Method for controlling NOemissions in the FCCU
    Patent number: 7780935
    Abstract: A process for the reduction of NOx emissions from a regeneration zone during a fluid catalytic cracking (FCC) process are disclosed. The process comprises contacting a hydrocarbon feedstock with a circulating inventory of an FCC cracking catalyst and a NOx reduction composition during an FCC process. The NOx reduction composition comprises at least one reduced nitrogen species component having the ability to reduce the content of reduced nitrogen species to molecular nitrogen under reducing or partial burn FCC conditions and at least one NOx reduction component having the ability to convert NOx to molecular nitrogen under oxidizing or full burn FCC conditions.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: August 24, 2010
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: John Allen Rudesill, George Yaluris, Meenakshi Sundaram Krishnamoorthy, Timothy Dougan, Katherine W. Dougan, legal representative