Tuning particulate filter performance through selective...

Gas separation – Specific media material – Ceramic or sintered

Reexamination Certificate

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C055S522000, C055S524000, C422S172000, C422S174000, C422S175000, C422S176000, C422S177000, C422S178000, C422S179000, C422S180000, C060S297000, C502S303000

Reexamination Certificate

active

07806956

ABSTRACT:
Modified exhaust aftertreatment filters for filtering engine exhaust are provided as are methods of design and manufacturing modified exhaust aftertreatment filters. The modified filters are subject to reduced back pressure and reduced thermal gradients experienced during regeneration as compared to unmodified filters. The modified filters include flow-through channels obtained by unplugging channels which normally are plugged in an unmodified filter.

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Development of Partial Filter Technology for HDD Retrofit; Todd Jacobs, Sougato Chetterjee, Ray Conway and Andy Walker; Copyright 2005 SAE International.
International Search Report and Written Opinion mailed Aug. 18, 2008.

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