Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2007-04-03
2007-04-03
Nguyen, Cam N. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S111000, C502S327000, C502S339000, C502S355000, C502S415000, C502S439000, C502S525000
Reexamination Certificate
active
11039032
ABSTRACT:
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during operation. In the purification catalyst of the present invention, Pd is supported by an aluminum composite oxide having a perovskite structure, the aluminum composite oxide is LnAl1−xMxO3in which Ln is a rare-earth element, and the element M in the LnAl1−xMxO3is one of elements in groups 1 to 5 and groups 12 to 14.
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Furukawa Atsushi
Kiguchi Kazunori
Matsuo Yuichi
Suzuki Norihiko
Hamre Schumann Mueller & Larson P.C.
Honda Motor Co. Ltd.
Nguyen Cam N.
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