| 发明名称 |
METODO E APARELHO PARA FUNDIR E REFINAR MATERIAL VITREO OU ANALOGO |
| 摘要 |
<p>Foaming of molten glass or the like as it enters a vacuum refining vessel is enhanced by altering the incoming stream so as to increase its surface area and/or retarding the passage of the stream through the vacuum headspace so as to increase its exposure to the vacuum.</p> |
| 申请公布号 |
PT87844(B) |
申请公布日期 |
1993.09.30 |
| 申请号 |
PT19880087844 |
申请日期 |
1988.06.24 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
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| 分类号 |
C03B5/12;C03B5/20;C03B5/225;(IPC1-7):C03B5/225 |
主分类号 |
C03B5/12 |
| 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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