Patent · US Expired

Piezoelectric ceramics

US6241908A · kind A · utility

8Cited by
0References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 20, 1999
Grant dateJun 5, 2001
Priority date
Expiry dateAug 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.