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Chung Zong Wan, Age 764 Scaletti Ct, East Millstone, NJ 08873
Chung Wan Phones & Addresses
4 Scaletti Ct, Somerset, NJ 08873 (732) 246-1750
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Us Patents
Nox Adsorber Catalyst With Superior Low Temperature Performance
US Patent:
8475752, Jul 2, 2013
Filed:
Jun 23, 2009
Appl. No.:
12/490252
Inventors:
Chung Z. Wan - Somerset NJ, US
Assignee:
BASF Corporation - Florham Park NJ
International Classification:
B01D 53/94
B01D 53/56
B01J 23/02
B01J 23/10
B01J 23/40
F01N 3/28
B01D 53/56
B01J 23/02
B01J 23/10
B01J 23/40
F01N 3/28
US Classification:
4232132, 4232135, 4232137, 60297, 60299, 60301, 50252712, 502304, 502325, 502340, 502344
Abstract:
The lean NOx trap catalyst composition of the present invention comprises distinct layers, or zone configuration or multi-brick arrangement. The top layer, front zone or front brick is free of any alkali or alkaline earth NOx trapping components. The under layer, rear zone or rear brick may contain any desirable NOx trapping component in contact with a precious metals group catalyst (e. g. , Pt). Catalysts of this invention show wide temperature operation window with superior low temperature performance.
Three-Way Catalyst For Lean Operating Engines
US Patent:
4675308, Jun 23, 1987
Filed:
Feb 20, 1986
Appl. No.:
6/832499
Inventors:
Chung Z. Wan - Somerset NJ
Joseph C. Dettling - Howell NJ
Kenneth I. Jagel - Stanton NJ
Joseph C. Dettling - Howell NJ
Kenneth I. Jagel - Stanton NJ
Assignee:
Engelhard Corporation - Menlo Park NJ
International Classification:
B01J 2104
B01J 2310
B01J 2340
B01J 2310
B01J 2340
US Classification:
502304
Abstract:
The invention relates to improved catalytic compositions for controlling gaseous contaminants from the combustion of carbonaceous fuels and, in particular, to three-way catalysts having improved ability to convert unburnt hydrocarbons, carbon monoxide and nitrogen oxides to less harmful forms in the presence of excess oxygen.
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