Gas separation – Specific media material – Ceramic or sintered
Reexamination Certificate
2007-08-09
2010-10-05
Griffin, Walter D (Department: 1797)
Gas separation
Specific media material
Ceramic or sintered
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.
REFERENCES:
patent: 4276071 (1981-06-01), Outland
patent: 4417908 (1983-11-01), Pitcher, Jr.
patent: 4419108 (1983-12-01), Frost et al.
patent: 4519820 (1985-05-01), Oyobe et al.
patent: 4559193 (1985-12-01), Ogawa et al.
patent: 4568402 (1986-02-01), Ogawa et al.
patent: 4810554 (1989-03-01), Hattori et al.
patent: 4857089 (1989-08-01), Kitagawa et al.
patent: 4960449 (1990-10-01), Yonushonis
patent: 4969328 (1990-11-01), Kammel
patent: 5110561 (1992-05-01), Hitachi et al.
patent: 5171335 (1992-12-01), Kojima et al.
patent: 5863311 (1999-01-01), Nagai et al.
patent: 6294141 (2001-09-01), Twigg et al.
patent: 6508852 (2003-01-01), Hickman et al.
patent: 6540816 (2003-04-01), Allie et al.
patent: 6544310 (2003-04-01), Badeau et al.
patent: 6656564 (2003-12-01), Ichikawa et al.
patent: 6669913 (2003-12-01), Haberkamp
patent: 6776814 (2004-08-01), Badeau
patent: 7052532 (2006-05-01), Liu et al.
patent: 7056365 (2006-06-01), Ichikawa et al.
patent: 7090714 (2006-08-01), Otsubo et al.
patent: 7211226 (2007-05-01), Liu et al.
patent: 7238217 (2007-07-01), Cutler et al.
patent: 7485273 (2009-02-01), Gandhi et al.
patent: 7490464 (2009-02-01), Li et al.
patent: 7578864 (2009-08-01), Watanabe et al.
patent: 7611560 (2009-11-01), Ichikawa
patent: 2003/0115859 (2003-06-01), Deeba
patent: 2003/0223922 (2003-12-01), Hsu
patent: 2004/0047774 (2004-03-01), Suwabe et al.
patent: 2004/0161373 (2004-08-01), Ichikawa et al.
patent: 2004/0258582 (2004-12-01), Miwa et al.
patent: 2005/0138907 (2005-06-01), Jobson et al.
patent: 2006/0057046 (2006-03-01), Punke et al.
patent: 2006/0070357 (2006-04-01), Yonushonis et al.
patent: 2007/0277511 (2007-12-01), Suwabe et al.
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.
Anderson Matthew L.
Blackwell Bryan E.
England Roger D.
Haberkamp William C.
Henrichsen Matthew P.
Andrus Sceales Starke & Sawall LLP
Cummins Filtration IP Inc.
Griffin Walter D
Orlando Amber
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