Dielectric compositions
US5070047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1991 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Jan 14, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/09701
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a dielectric composition comprising: PA0 (a) about 30% to about 100% by weight of a glass composition selected from the group consisting of: PA1 (a-1) a bismuth-free, lead-free or low-lead containing glass composition having a glass transition temperature in the range of about 600.degree. C. to about 800.degree. C.; PA1 (a-2) a mixture of two bismuth-free, lead-free or low-lead containing glass compositions comprising a first glass composition having a glass transition temperature in the range of about 585.degree. C. to about 620.degree. C. and a second glass composition having a glass transition temperature in the range of about 765.degree. C. to about 815.degree. C.; or PA1 (a-3) a mixture of three bismuth-free, lead-free or low-lead containing glass compositions comprising a first glass composition having a glass transition temperature in the range of about 585.degree. C. to about 620.degree. C., a second glass composition having a glass transition temperature in the range of about 765.degree. C. to about 815.degree. C., and a third glass composition having a glass transition temperature in the range of about 650.degree. C. to about 720.degree. C.; PA0 …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.