发明名称 |
POLISHING SEMICONDUCTOR WAFERS |
摘要 |
<p>An endless belt for a belt type polishing machine comprises a support fabric and a polymer layer of relatively low hardness. The polymer layer is formed with drainage grooves. The support fabric may comprise a non woven or woven material, or a membrane with oriented reinforcing yarns. A further version comprises a spiral-link fabric supporting a woven or non woven layer carrying the polymer layer. The polymer layer may be a double layer, the upper of which is either harder or softer than the lower layer.</p> |
申请公布号 |
EP0999918(B1) |
申请公布日期 |
2002.12.11 |
申请号 |
EP19980935180 |
申请日期 |
1998.07.21 |
申请人 |
PERIPHERAL PRODUCTS INC |
发明人 |
DUDOVICZ, WALTER;LOMBARDO, BRIAN;CONKLIN, ALFRED A. |
分类号 |
B24B21/04;B24B37/20;B24B37/26;B24D11/06;H01L21/304;(IPC1-7):B24D11/06;B24B37/04 |
主分类号 |
B24B21/04 |
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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