Patents Represented by Attorney Paul A. Marshall

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  • Exhaust treatment device
    Patent number: 7189375
    Abstract: An exhaust treatment device for treating an exhaust gas stream combines the functionalities of a catalytic particulate filter and a NOx absorber catalyst into a single integral device and is disposed in an exhaust conduit. By combining the functionalities of the catalytic particulate filter and a NOx absorber catalyst into a single integral device, the exhaust treatment device eliminates the temperature losses inherent to the heat capacity of one catalytic device placed in front of the other.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: March 13, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Michel Molinier, Owen H. Bailey