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US Patent 11504704 Exhaust gas purification device
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Patent
Date Filed
August 24, 2021
Date of Patent
November 22, 2022
Patent Application Number
17410043
Patent Citations
US Patent 11224861 Layered TWC
US Patent 10512898 Layered automotive catalyst composites
US Patent 11331651 Three-way catalyst
US Patent 10150082 Catalyst for internal combustion engine exhaust gas purification, and system for same
US Patent 10449518 Zoned diesel oxidation catalyst
Patent Jurisdiction
United States Patent and Trademark Office
Patent Number
11504704
Patent Primary Examiner
Cam N. Nguyen
CPC Code
B01J 23/464
B01J 35/0006
B01J 35/023
B01J 35/04
B01D 53/9468
F01N 3/2803
B01J 23/44
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