Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kohei Takasaki0
Tatsuya Ohashi0
Date of Patent
January 30, 2024
0Patent Application Number
175989940
Date Filed
March 3, 2020
0Patent Citations
Patent Primary Examiner
Patent abstract
An exhaust gas purification catalyst device having a substrate, a first catalyst coating layer on the substrate, and a second catalyst coating layer on the first catalyst coating layer. The first catalyst coating layer includes inorganic oxide particles, palladium carried on the inorganic oxide particles, and a barium compound. The second catalyst coating layer includes alumina particles and rhodium carried by the alumina particles. The ratio (M
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