Brooks Kushman P.C.
Exhaust gas purifying catalyst
A catalyst comprises an HC trapping material that is capable of trapping HC in an exhaust gas under low temperatures and releasing HC with a raise in temperature and catalytic material containing a Ce—Pr double oxide capable of oxidizing and purifying HC from the HC trapping material with a high efficiency.
Mazda Motor Corporation
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Hisaya Akihide Masahiko Seiji Kenji Hiroshi
Kawabata Takami Shigetsu Miyoshi Okamoto Yamada