发明名称 |
PRODUCTION OF PREFORM ROD FOR OPTICAL FIBER |
摘要 |
PURPOSE:To improve the accuracy in size of a pipe and to obviate the deformation of the pipe during its heating process so as to produce a preform rod which contains a reduced quantity of unnecessary impurity and which has a large core diameter by suing a refractory pipe place of a glass pipe in a lining CVD method. |
申请公布号 |
JPS544148(A) |
申请公布日期 |
1979.01.12 |
申请号 |
JP19770069344 |
申请日期 |
1977.06.11 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE;FUJIKURA LTD |
发明人 |
KOBAYASHI IKUTAROU;KOYAMA MASAKI;OSANAI YUTAKA;INADA KOUICHI |
分类号 |
C03B37/018;G02B6/00 |
主分类号 |
C03B37/018 |
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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