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W Burton Williamson, Ronald G Silver, Jack C Summers: Paladium-containing three-way automotive catalysts having unique support. ASEC Manufacturing, Kuffner & Associates, September 30, 1997: US05672557 (7 worldwide citation)

A palladium three-way catalyst is supported on a unique ceria-lanthana-alumina support where the alumina content is lower than previously believed necessary to maintain catalyst activity. Preferably the ceria and lanthana constitute the major proportion of the support.


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W Burton Williamson, Ronald G Silver: Palladium catalyst washcoat supports for improved methane oxidation in natural gas automotive emission catalysts. ASEC Manufacturing General Partnership, Kuffner & Associates, December 26, 2000: US06165935 (6 worldwide citation)

The invention provides a catalyst which can convert methane, carbon monoxide, and nitrogen oxides in lean, stoichiometric, and rich air/fuel environments. Support (A) of the catalyst comprises an alumina support impregnated with Pd providing lean methane conversions and support (B) of the catalyst c ...


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W Burton Williamson, Ronald G Silver: Palladium catalyst washcoat supports for improved methane oxidation in natural gas automotive emission catalysts. ASEC Manufacturing, Kuffner & Associates, April 21, 1998: US05741467 (6 worldwide citation)

The invention provides a catalyst which can convert methane, carbon monoxide, and nitrogen oxides in lean, stoichiometric, and rich air/fuel environments. Support (A) of the catalyst comprises an alumina support impregnated with Pd providing lean methane conversions and support (B) of the catalyst c ...


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Ronald G Silver, W Burton Williamson: Methods of control of nitrogen oxide and hydrocarbon emissions from small engines. ASEC Manufacturing, Vincent A Cichosz, January 16, 2001: US06174504 (5 worldwide citation)

A method of reducing the amounts of nitrogen oxides and hydrocarbons in the exhaust gas from a small, gasoline-fueled utility engine operating fuel-rich, while not reducing the amount of carbon monoxide in said exhaust gas, comprising treatment of said exhaust gas by a catalyst consisting essentiall ...


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Ronald G Silver, Craig P Hittle: Canister aftertreatment module. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, June 11, 2013: US08460610 (1 worldwide citation)

An aftertreatment module for use with an engine is disclosed. The aftertreatment module may have a canister, and a wall disposed within the canister and axially-dividing the canister into a first portion and a second portion. The aftertreatment module may also have a first treatment device disposed ...


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Tianli Zhu, Ronald G Silver, Sean C Emerson, Richard J Bellows: Oxygen-assisted water gas shift reactor having a supported catalyst, and method for its use. Stephen A Schneeberger, February 6, 2003: US20030026747-A1 (1 worldwide citation)

A shift converter, or reactor, (16HT, 16LT) in a fuel processing subsystem (14, 16HT, 16LT, 18), as for a fuel cell (12), uses an improved catalyst bed (34, 50) and the addition of oxygen (40, 40A, 40B, 40C, 40D, 41A, 41B, 41C, 41D) to reduce the amount of carbon monoxide in a process gas stream. Th ...


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Christie Susan Ragle, Ronald G Silver, Svetlana Mikhailovna Zemskova, Colleen J Eckstein: Exhaust system having a gold-platinum group metal catalyst. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, August 7, 2012: US08236261

A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.


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Christie Susan Ragle, Ronald G Silver, Svetlana Mikhailovna Zemskova, Colleen J Eckstein: Exhaust system having a gold-platinum group metal catalyst. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, December 6, 2011: US08071504

A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.