Dielectric ceramic and laminated capacitor
US8318624B2 · kind B2 · utility
1Cited by
1References
15Claims
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Key dates
| Filing date | Sep 14, 2010 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Jun 29, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/6588
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dielectric ceramic containing a BaTiO3 based material as its main constituent, and, as accessory constituents, a rare-earth element R(R is at least one selected from Nd, Eu, Gd, Tb, Dy, Ho, Er, Yb, and Y), M (M is at least one selected from Mg, Mn, Ni, Co, Cu, Al, Mo, W, and V), SiO2, and CaO. Among crystal grains included in this dielectric ceramic, the ratio of the number of crystal grains 11 in which Si is present in solid solution is 5% or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.