Exhaust gas purifying catalyst and method for manufacturing...

Details Exhaust gas purifying catalyst and method for manufacturing... Exhaust gas purifying catalyst and method for manufacturing...

2005-12-14

2009-06-23

Mayes, Melvin C (Department: 1793)

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

Miscellaneous

C055S523000, C055S524000

Reexamination Certificate

active

07550408

ABSTRACT:
Disclosed is an exhaust gas purifying catalyst having a front end high concentration coating area coated with a precious metal of a high concentration, and a rear end complex coating area coated at different precious metal densities according to the flowing amount of the exhaust gas and a method for manufacturing an exhaust gas purifying catalyst, which is capable of simultaneously coating a rear end complex coating area at different precious metal densities according to the flowing amount of the exhaust gas. The exhaust gas purifying catalyst includes a front end high concentration coating area coated with a precious metal of a high concentration and a rear end complex coating area having at least two areas of different coating densities on the rear side of the front end high concentration coating area.

REFERENCES:
patent: 2002/0042344 (2002-04-01), Kondo et al.
patent: 10-280950 (1998-10-01), None
patent: 2002-177794 (2002-06-01), None
patent: 2003-334444 (2003-11-01), None

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