Filter system and particulate filter unit therefor

Details Filter system and particulate filter unit therefor Filter system and particulate filter unit therefor

2006-04-18

2006-04-18

Tran, Hien (Department: 1764)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

C422S170000, C422S171000, C422S178000, C055SDIG030

Reexamination Certificate

active

07029634

ABSTRACT:
The invention provides a filter system and particulate filter unit therefor. The filter system may act as a purifier and a muffler for heavy and light duty diesel vehicles. The invention includes one or more combination filter units that remove particulates and nitrogen oxides in successive passes before the gas exits. A particulate filter unit may be used that removes additional particulates.

REFERENCES:
patent: 3675398 (1972-07-01), Giarrizzo
patent: 4544388 (1985-10-01), Rao et al.
patent: 5961931 (1999-10-01), Ban et al.
patent: 6056796 (2000-05-01), Chiang et al.
patent: 6471918 (2002-10-01), Sherwood

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