Hermetic coatings for optical fiber and product
US4735856A · kind A · utility
37Cited by
21References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | Apr 5, 1988 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2958
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for hermetically sealing a silica based fiber product after the fiber product has been drawn from a melt or preform wherein a hermetic layer of boron carbide or a ceramic compound having a density of above about 4 g/cc is deposited upon the fiber product. The fiber product can be initially coated with carbon or boron carbide prior to the application of the ceramic compound. Also, a method for making such fiber products using these methods, and the resultant hermetically sealed fiber products produced thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.