Chemistry of inorganic compounds – Nitrogen or compound thereof – Oxygen containing
Reexamination Certificate
2006-11-30
2008-09-02
Wood, Elizabeth D (Department: 1793)
Chemistry of inorganic compounds
Nitrogen or compound thereof
Oxygen containing
C423S400000, C423S402000, C423S404000, C423S405000, C423S512100, C423S532000, C423S533000
Reexamination Certificate
active
07419647
ABSTRACT:
A hydrocarbon trap comprises an Ag-zeolite which is heated by a unique steaming regimen.
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U.S. Appl. No. 11/639,182 “Zeolite Catalyst with Improved NOx Reduction in SCR”, filed Dec. 12, 2006.
Liu Xinsheng
Wei Xinyi
BASF Catalysts LLC
Brown Melanie
Frenkel & Associates
Kiefer Phil
Wood Elizabeth D
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