专利内容由知识产权出版社提供
专利名称：SILICA GLASS CRUCIBLE HAVING
MULTILAYERED STRUCTURE
发明人：Makiko KODAMA,Masaki MORIKAWA申请号：US12351207申请日：20090109
公开号：US20100107970A1公开日：20100506
专利附图：
摘要：Disclosed is a silica glass crucible employed in pulling silicon single crystals. Thecrucible comprises at least a transparent layer, semitransparent layer, and opaque layerdisposed from the inner surface side to the outer surface side of the crucible. The
content of bubbles in the transparent layer is less than 0.3 percent; the content ofbubbles in the semitransparent layer falls within a range of from 0.3 to 0.6 percent; andthe content of bubbles in the opaque layer is greater than 0.6 percent.
申请人：Makiko KODAMA,Masaki MORIKAWA
地址：Akita JP,Akita JP
国籍：JP,JP
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