1
Paul Joseph Andersen: Exhaust gas catalyst comprising rhodium, zirconia and rare earth oxide. Johnson Matthey Public Company, RatnerPrestia, February 17, 2004: US06692712 (25 worldwide citation)

A catalyst comprising rhodium on a support, the support comprising 52-95% zirconia and 5-48% rare earth oxide, based on the total weight of (a) and (b), the concentration of the rhodium on the support being 0.035-0.35% based on the total weight of the rhodium and the support, and the catalyst contai ...


2
Paul Joseph Andersen, Todd Ballinger, David Bergeal, Hsiao Lan Chang, Hai Ying Chen, Julian Cox, Ralf Dotzel, Rainer Leppelt, Jörg Werner Münch, Hubert Schedel, Duncan John William Winterborn: Oxidation catalyst. Johnson Matthey Public Company, RatnerPrestia, September 11, 2012: US08263032 (22 worldwide citation)

An oxidation catalyst comprises an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a zeolitic molecular sieve, a non-zeolitic molecular sieve or a mixture of any two or more thereof; and 0-80% by weight optionally stabilized ceria, which c ...


3
Paul Joseph Andersen, Hai Ying Chen, Joseph Michael Fedeyko, Erich Weigert: Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides. Johnson Matthey Public Company, RatnerPrestia, August 16, 2011: US07998443 (19 worldwide citation)

A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducin ...


4
Paul Joseph Andersen, Christopher John Bennett, Barry John Cooper, Phillip Shady: Three-way conversion catalysts and methods for the preparation therefor. Johnson Matthey Public Company, RatnerPrestia, September 30, 2003: US06625976 (19 worldwide citation)

A platinum group metal three-way conversion catalyst composition containing a high temperature catalytic component and a low temperature catalytic component has each catalytic component present as separate distinct particles in the same washcoat layer. The catalyst composition is prepared from a was ...


5
Todd Howard Ballinger, Paul Joseph Andersen: Hydrocarbon trap/catalyst for reducing cold-start emissions from internal combustion engines. Johnson Matthey Public Company, RatnerPrestia, September 9, 2003: US06617276 (14 worldwide citation)

An active metal, particularly cesium, impregnated hydrocarbon adsorbent, such as zeolite, comprises an improved hydrocarbon trap/oxidizing catalyst for use in effectively adsorbing hydrocarbons during automotive cold-start and subsequently desorbing, oxidizing and removing hydrocarbons during warmer ...


6
Paul Joseph Andersen, Jillian Elaine Bailie, John Leonello Casci, Hai Ying Chen, Joseph Michael Fedeyko, Rodney Kok Shin Foo, Raj Rao Rajaram: Transition metal/zeolite SCR catalysts. Jimmie D Johnson Jr, December 10, 2013: US08603432 (13 worldwide citation)

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahed ...


7
Paul Joseph Andersen, Hai Ying Chen, Joseph Michael Fedeyko, Erich Weigert: Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides. Johnson Matthey Public Company, RatnerPrestia, January 24, 2012: US08101147 (12 worldwide citation)

A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducin ...


8
Paul Joseph Andersen, Todd Howard Ballinger, David Scott Lafyatis, Raj Rao Rajaram, Andrew Peter Walker: Method and system for maintaining efficiency of a three-way catalyst. Johnson Matthey Public Company, RatnerPrestia, October 21, 2003: US06634169 (10 worldwide citation)

A catalyst system includes a three-way catalyst (TWC) mounted underfloor and an engine management system programmed to initiate an enrichment of the exhaust gases exiting the engine with at least one of CO and hydrocarbons and to add secondary air to the exhaust gases in the exhaust passage upstream ...


9
Paul Joseph Andersen, Hai Ying Chen, Joseph Michael Fedeyko, Erich Weigert: Small pore molecular sieve supported copper catalysts durable against lean/rich aging for the reduction of nitrogen oxides. Johnson Matthey Public Company, Jimmie Johnson, May 22, 2012: US08182777 (9 worldwide citation)

A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducin ...


10
Joseph Michael Fedeyko, Rodney Kok Shin Foo, John Leonello Casci, Hai Ying Chen, Paul Joseph Andersen, Jillian Elaine Collier, Raj Rao Rajaram: Transition metal/zeolite SCR catalysts. Johnson Matthey Public Company, Jimmie D Johnson Jr, December 9, 2014: US08906820 (6 worldwide citation)

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahed ...