Low-permittivity glass fibers
US5958808A · kind A · utility
30Cited by
1References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 18, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Mar 18, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0366
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The low-dielectric-constant glass fiber of the present invention contains by weight, as a glass composition, 50 to 60% of SiO.sub.2, 10 to 20% of Al.sub.2 O.sub.3, 20 to 30% of B.sub.2 O.sub.3, 0 to 5% of CaO, 0 to 4% of MgO, 0 to 0.5% of Li.sub.2 O+Na.sub.2 O+K.sub.2 O and 0.5 to 5% of TiO.sub.2, and is preferably used as glass for printed wiring boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.