| 发明名称 |
VACUUM REFINING OF GLASSY MATERIALS WITH CONTROLLED FOAMING |
| 摘要 |
In the process for refining glass or the like by vacuum, the collapse of foam is expedited by heating the headspace within the vacuum chamber. |
| 申请公布号 |
DE3760669(D1) |
申请公布日期 |
1989.11.09 |
| 申请号 |
DE19873760669 |
申请日期 |
1987.06.29 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
SCHWENNINGER, RONALD LEE;MATESA, JOSEPH MICHAEL |
| 分类号 |
C03B5/04;C03B5/12;C03B5/14;C03B5/225;C03B5/235;C03C1/00;(IPC1-7):C03B5/225 |
主分类号 |
C03B5/04 |
| 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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