Microwave dielectric ceramic composition
US5132258A · kind A · utility
10Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1991 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | Aug 20, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/49
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A microwave dielectric ceramic composition containing as main components substances expressed by a composition formula of x.multidot.TiO.sub.2 -y.multidot.ZrO.sub.2 -z.multidot.SnO.sub.2 (where 0.30.ltoreq.x.ltoreq.0.60, 0.25.ltoreq.y.ltoreq.0.60, and 0.025.ltoreq.z.ltoreq.0.20) when their molar fractions are taken as x, y and z (x+y+z=1), and containing as additives predetermined amounts of one type selected from the group consisting of MnO, Al.sub.2 O.sub.3, CuO, Li.sub.2 O and Ga.sub.2 O.sub.3 and predetermined amounts of one type selected from the group consisting of Nb.sub.2 O.sub.5 and Ta.sub.2 O.sub.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.