Extended-baking process for glass deposition tubes
US7946135B2 · kind B2 · utility
1Cited by
13References
19Claims
0Family size
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Key dates
| Filing date | Jan 2, 2008 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Oct 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.