Manufacturing method of porous glass base material for optical fiber and manufacturing apparatus
US11999646B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Aug 2, 2019 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jul 21, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/88
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a method of manufacturing porous glass base for optical fiber, a liquid organic siloxane raw material stored in a raw material tank of internal pressure P1 is controlled by a mass flow controller at a predetermined flow rate and pumped through pipe of internal pressure P2 to a vaporizer, the liquid raw material is vaporized in the vaporizer and supplied as a gas raw material to a burner, and the silica fine particles formed by burning the gas raw material in the burner are deposited to form a porous glass base material, where P1≤P2 is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.