Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Reexamination Certificate
2007-09-04
2007-09-04
Wood, Elizabeth D. (Department: 1755)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
C502S060000, C502S063000, C502S064000, C502S065000, C502S067000, C502S069000, C502S071000, C502S073000, C502S074000, C502S078000, C502S079000, C502S077000, C502S527150
Reexamination Certificate
active
10824847
ABSTRACT:
An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust gas from an internal combustion engine by using the catalyst. A catalyst possessing durability and excelling in the ability to adsorb hydrocarbon, the ability to purify, and the three-way performance is provided.
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ICT Co., Ltd.
International Catalyst Technology Inc.
Occhiuti Rohlicek & Tsao LLP
Wood Elizabeth D.
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