Exhaust gas-purifying catalyst

Details Exhaust gas-purifying catalyst Exhaust gas-purifying catalyst

2009-12-11

2011-10-18

Silverman, Stanley (Department: 1736)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S304000, C502S328000, C502S339000, C502S340000, C502S527120, C423S213500

Reexamination Certificate

active

08039418

ABSTRACT:
A high exhaust gas-purifying performance is achieved. An exhaust gas-purifying catalyst includes a substrate, a lower layer covering the substrate and including an oxygen storage material and palladium, and an upper layer covering the lower layer and including rhodium and a carrier supporting it. The lower layer is rhodium-free. The upper layer has an oxygen storage capacity lower than that of the lower layer.

REFERENCES:
patent: 5376610 (1994-12-01), Takahata et al.
patent: 5753580 (1998-05-01), Hayashi et al.
patent: 6294140 (2001-09-01), Mussmann et al.
patent: 6348430 (2002-02-01), Lindner et al.
patent: 6764665 (2004-07-01), Deeba et al.
patent: 2008/0044330 (2008-02-01), Chen et al.
patent: 1281144 (1989-11-01), None
patent: 5293376 (1993-11-01), None
patent: 06-063403 (1994-03-01), None
patent: 663403 (1994-03-01), None
patent: 0760117 (1995-03-01), None
patent: 9155192 (1997-06-01), None
patent: 9221304 (1997-08-01), None
patent: 2005-000884 (2005-01-01), None
patent: WO-2009/005153 (2009-01-01), None
International Preliminary Report on Patentability mailed Feb. 4, 2010, for PCT Appliction No. PCT/JP2008/062220, English Translation, nine pages.
International Search Report for PCT/2008/062220, mailed Sep. 18, 2008.

Affiliated with

Also associated with

Rating

Exhaust gas-purifying catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas-purifying catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas-purifying catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4261902