| 发明名称 |
PRODUCTION OF OPTICAL TRANSMISSION GLASS |
| 摘要 |
PURPOSE:A preform is formed by pressing and compacting the powder that can become a clad material around a core material and sintering the powder, whereby the unevenness of the core-clad interface is prevented. |
| 申请公布号 |
JPS52150641(A) |
申请公布日期 |
1977.12.14 |
| 申请号 |
JP19760067257 |
申请日期 |
1976.06.09 |
| 申请人 |
SUMITOMO ELECTRIC INDUSTRIES |
发明人 |
YOSHIOKA NAOKI;HOSHIKAWA MASAO |
| 分类号 |
C03B37/014;C03B37/012;G02B6/00 |
主分类号 |
C03B37/014 |
| 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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