| 申请日期 | 2025-07-12 | 申请号 | EP03253716 |
| 公开（公告）号 | EP1382589B1 | 公开（公告）日 | 2006-08-23 |
| 公开国别 | EP | 申请人省市代码 | 全国 |
| 申请人 | NGK SPARK PLUG CO | ||
| 简介 | Sintered silicon nitride containing silicon nitride substantially as a primary component and substantially no Al2O3, containing at least one element selected from among a Group 4 element of the periodic table, a rare earth element, and Mg, wherein the amount of the selected element as converted to its oxide is at least 0.5 mol% and less than 2.6 mol% on the basis of the entirety of the sintered silicon nitride. | ||
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