Flow-through honeycomb substrate and exhaust after treatment system and method
Patent 7491373 Issued on February 17, 2009. Estimated Expiration Date: 
November 15, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 15, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of fabricating a sintered and selectively plugged honeycomb structure Diesel particulate filters Particulate sealant for filter plug forming Patent #: 6809139 InventorsAssigneeApplicationNo. 11599928 filed on 11/15/2006US Classes:423/213.2Utilizing as solid sorbent, catalyst, or reactant a material containing a transition elementExaminersPrimary: Vanoy, Timothy CAttorney, Agent or FirmForeign Patent References
International ClassesB01D 53/92B01D 53/94 B01J 35/04 B32B 3/12 F01N 3/022 F01N 3/033 F01N 3/08 F01N 3/10 AbstractA system and method including a radially non-uniformly plugged flow-through honeycomb substrate positioned upstream of a wall-flow particulate filter for controlled thermal regeneration of the wall-flow particulate filter, the flow-through honeycomb substrate having a flow-through region including a first portion of parallel channels and a flow-control region including a second portion of parallel channels, the first portion of the parallel channels including unplugged channels and the second portion of the parallel channels including plugged channels, with the flow-control region adjusting flow distribution through the flow-through honeycomb substrate.Field of SearchUtilizing as solid sorbent, catalyst, or reactant a material containing a transition elementIncluding successive stage treatments to modify or remove a different component in each stage Solid component Anti-pollution By means producing a chemical reaction of a component of the exhaust gas Having means for regenerating, replacing, or feeding liquid or solid reagent or catalyst Using a catalyst Catalyst in engine manifold or at exhaust port HAVING FOREIGN OR DIVERSE FUNCTION (E.G., PREVENT CORROSION, ETC.) CATALYST OR PRECURSOR THEREFOR Metal, metal oxide or metal hydroxide Carbonaceous contaminant MONOLITH WITH SPECIFIED SHAPE OR DIMENSION OF CELL OPENING (E.G., HONEYCOMB, RINGS, ETC.) FILTERING Coated or chemically treated filter Waste gas purifier Unitary (i.e., nonparticulate) contact bed (e.g., monolithic catalyst bed, etc.) Honeycomb-like Filled honeycomb cells (e.g., solid substance in cavities, etc.) |
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