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Class Information
Number: 502/527.13
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Plural layers on a support, each layer having a distinct function > More than two overlapping layers
Description: Collection of art wherein at least three overlapping layers are present on the support.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8673809 Low level noble metal-supporting three-way catalyst Mar. 18, 2014
8663588 Three way catalyst Mar. 4, 2014
8640440 Removal of particulates from the exhaust gas of internal combustion engines operated with a predominantly stoichiometric air/fuel mixture Feb. 4, 2014
8609578 Exhaust gas purifying catalyst Dec. 17, 2013
8580706 Exhaust gas-purifying catalyst Nov. 12, 2013
8568675 Palladium-supported catalyst composites Oct. 29, 2013
8557204 Three-way catalyst having an upstream single-layer catalyst Oct. 15, 2013
8557203 Architectural diesel oxidation catalyst for enhanced NO.sub.2 generator Oct. 15, 2013
8551908 Exhaust gas purification catalyst Oct. 8, 2013
8530374 Catalyst body for production of brush-shaped carbon nanostructure Sep. 10, 2013
8513155 Perovskite-type compounds for use in lean NO.sub.x traps Aug. 20, 2013
8501133 Catalyst for treating exhaust gases, method for producing the same, and method for treating exhaust gases Aug. 6, 2013
8496899 Exhaust gas purifying catalyst Jul. 30, 2013
8491860 Methods and systems for an engine emission control system Jul. 23, 2013
8455390 Exhaust gas purifying catalyst Jun. 4, 2013
8449852 Diesel oxidation catalysts, systems and methods of treatment May. 28, 2013
8409518 Sulfur tolerant perovskite supported catalysts Apr. 2, 2013
8318629 Platinum group metal-free catalysts for reducing the ignition temperature of particulates on a diesel particulate filter Nov. 27, 2012
8318632 Exhaust gas purification catalyst Nov. 27, 2012
8309488 Exhaust gas purifying catalyst Nov. 13, 2012
8304366 System for remediating emissions and method of use Nov. 6, 2012
8273681 Exhaust gas purifying catalyst and method for manufacturing the same Sep. 25, 2012
8258075 Catalyst for treating exhaust gases, method for producing the same, and method for treating exhaust gases Sep. 4, 2012
8258070 Engine exhaust catalysts containing palladium-gold Sep. 4, 2012
8252258 Diesel oxidation catalyst with layer structure for improved hydrocarbon conversion Aug. 28, 2012
8246923 High Pd content diesel oxidation catalysts with improved hydrothermal durability Aug. 21, 2012
8241725 Honeycomb segment, honeycomb structure and process for producing the same Aug. 14, 2012
8211392 Diesel oxidation catalyst composite with layer structure for carbon monoxide and hydrocarbon conversion Jul. 3, 2012
8211824 Exhaust gas purification catalyst Jul. 3, 2012
8202483 Catalyst-supported particulate filter Jun. 19, 2012
8158550 Multilayer catalyst, process for the preparation and use thereof in the partial oxidation of hydrocarbons in gaseous phase Apr. 17, 2012
8153549 Catalyst for treating exhaust gas and device for treating exhaust gas using the same Apr. 10, 2012
8133837 Exhaust gas-purifying catalyst Mar. 13, 2012
8119554 Use of shaped bodies having catalytic properties as reactor internals Feb. 21, 2012
8101539 Purifying catalyst Jan. 24, 2012
8088707 Supported catalyst with solid sphere structure, method for preparing the same and carbon nanotubes prepared using the same Jan. 3, 2012
8084389 Sulfur storage catalyst Dec. 27, 2011
8034738 Process for producing catalyst body for production of brush-shaped carbon nanostructure Oct. 11, 2011
8007750 Multilayered catalyst compositions Aug. 30, 2011
7998896 Exhaust gas purifying catalyst Aug. 16, 2011
7981390 Small engine palladium catalyst article and method of making Jul. 19, 2011
7922988 Multilayered catalyst compositions Apr. 12, 2011
7867943 Exhaust gas purifying catalyst, and method for producing the same Jan. 11, 2011
7816299 Hydrotreating catalyst system suitable for use in hydrotreating hydrocarbonaceous feedstreams Oct. 19, 2010
7799727 Layered composition and processes for preparing and using the composition Sep. 21, 2010
7795172 Layered exhaust treatment catalyst Sep. 14, 2010
7759283 Catalyst for purifying exhaust gas Jul. 20, 2010
7754171 Multilayered catalyst compositions Jul. 13, 2010
7749472 Phosgard, a new way to improve poison resistance in three-way catalyst applications Jul. 6, 2010
7745367 Engine exhaust catalysts containing palladium-gold Jun. 29, 2010

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