Method of manufacturing a solid preform
US7069749B2 · kind B2 · utility
0Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2003 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Mar 30, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/01861
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method of manufacturing a solid preform by moving a heat source parallel to the longitudinal axis of a substrate tube, whose inner surface is coated with one or more doped or undoped glass layers, so as to collapse the substrate tube into the solid preform in a number of passes, with an etchant being supplied to the interior of the substrate tube after a number of passes of the heat source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.