| 发明名称 |
METHOD OF CONTROLLING FOAM WHEN REFINING GLASSY MATERIALS UNDER VACUUM |
| 摘要 |
<p>The invention relates to a vacuum purification process for glass material or the like, with the collapse of the foam being hastened by heating the upper part of the vacuum chamber.</p> |
| 申请公布号 |
IL83036(D0) |
申请公布日期 |
1987.12.20 |
| 申请号 |
IL19870083036 |
申请日期 |
1987.06.30 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
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| 分类号 |
C03B5/225;C03B;C03B5/00;C03B5/16;C03C1/00;(IPC1-7):C03B/ |
主分类号 |
C03B5/225 |
| 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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