| 申请日期 | 2025-06-25 | 申请号 | US15022956 |
| 公开（公告）号 | US20160228853A1 | 公开（公告）日 | 2016-08-11 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | MAZDA MOTOR CORPORATION | ||
| 简介 | An exhaust gas purification catalytic material is made of a composite oxide. This composite oxide contains Zr and a plurality of rare earth metals, and is doped with Rh. An surface portion of the composite oxide has a higher concentration of at least one of the rare earth metals than an inner portion thereof. | ||
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