| 申请日期 | 2025-08-28 | 申请号 | US12169725 |
| 公开（公告）号 | US20090041636A1 | 公开（公告）日 | 2009-02-12 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Koichiro HARADA; Kenji SUZUKI; Kenji OKAMOTO; Hiroshi YAMADA; Akihide TAMANI | ||
| 简介 | In at least part of a catalyst layer of a particulate filter, a second catalyst part is exposed on the surface of the catalyst layer to overlie a first catalyst part, the first catalyst part contains Pt-carried activated alumina particles, the second catalyst part contains ZrNd-based mixed oxide particles containing a rare earth metal M and at least one of the first catalyst part and the second catalyst part further contains CeZr-based mixed oxide particles containing a rare earth metal R. | ||
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