Dielectric ceramic composition
US6846767B2 · kind B2 · utility
6Cited by
6References
4Claims
0Family size
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Key dates
| Filing date | Apr 17, 2002 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/85
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A dielectric ceramic composition of high dielectric constant and low dielectric loss, which can be co-fired with Ag electrodes, is provided for use in various parts of electric and electronic appliances. Based on a base composition with a high dielectric constant, the composition comprises glass frit and optionally CuO, as represented by the following formula:a wt. % {x CaO-y1 Sm2O3-y2 Nd2O3-w Li2O-z TiO2}+b wt. % (ZnO—B2O3—SiO2 based or Li2O—B2O3—SiO2 based glass frit)+c wt. % CuO
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.