US 12,179,177 B2Granted

Exhaust-gas purification catalyst and exhaust-gas treatment apparatus

AssigneeMurata Manufacturing Co., Ltd.

InventorsHideto Sato, Akihiro Takeuchi

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An exhaust-gas purification catalyst that contains a perovskite-type composite oxide composed of at least Ba, Zr, Y, and Pd.

Dependent claims

An exhaust-gas purification catalyst comprising a perovskite-type composite oxide consisting essentially of Ba, Zr, Y, and Pd.

Dependencies are inferred from the claim text.

B01D 53/944
By catalytic processes: simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
B01J 23/63
Platinum group metals: with rare earths or actinides
B01D 53/94
Of engine exhaust gases: by catalytic processes
B01J 21/066
Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof: zirconium or hafnium; Oxides or hydroxides thereof

From the US filing history. Foreign family members aren’t listed.

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