Piezoelectric ceramics
US6241908A · kind A · utility
8Cited by
0References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/81
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Piezoelectric ceramics which is made of compounds shaped in bismuth layer containing Sr, Bi, Ti and Ln (lanthanoid). The compound contains SrBi4Ti4O15 typed crystals. In the piezoelectric ceramics, an atomic ratio of Ln/(Sr+Ln) is 0<Ln/(Sr+Ln)<0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.