发明名称 |
ALUMINA PROCESS FOR SEMICONDUCTOR MEMORY CELL PACKAGE |
摘要 |
Alumina for semiconductor memory cell package radiating only low level alpha -rays, and a process for its production which comprises extracting an alumina component from bauxite to obtain a sodium aluminate solution, substantially removing organic compounds contained in the solution, seed-decomposing the solution to deposit alumina hydrate, and baking the alumina hydrate. |
申请公布号 |
AU570562(B2) |
申请公布日期 |
1988.03.17 |
申请号 |
AU19850042984 |
申请日期 |
1985.05.20 |
申请人 |
SHOWA ALUMINIUM INDUSTRIES., |
发明人 |
AKIRA SAKAMOTO;KOUTARO HIRAYANAGI |
分类号 |
H01L23/06;C01F7/04;C01F7/06;C01F7/14;C01F7/46;C01F7/47;H01B3/12;H01L21/48;H01L23/08;(IPC1-7):H01B3/12 |
主分类号 |
H01L23/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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