The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2015
Filed:
Dec. 15, 2010
Michael Schossmann, Frauental, AT;
Adalbert Feltz, Deutschlandsberg, AT;
Michael Schossmann, Frauental, AT;
Adalbert Feltz, Deutschlandsberg, AT;
EPCOS AG, Munich, DE;
Abstract
A piezoelectric ceramic material has the general formula: PDZ(PbO)where: 0<c≦0.025; 0≦d≦0.05; 0≦w≦0.05; where P stands for a compound having the formula [PbAg][(ZrTi)Cu]O, where 0.50≦1−y≦0.60; 0<u≦0.0495; 0≦v≦0.02, and D stands for a component of the general formula [(MO)(MO)][NbO], where Mstands for BaSr, where 0≦t≦1, Mstands for Sr and/or Ca, and 0<p<1 and ⅔<a<1 and Z stands for a compound of the general formula: Pb(LR)Owhere L is present in the oxidation state II or III, and R is present in the oxidation state VI or V, and: Lis selected from among Fe, Mg, Co, Ni and Cu in combination with R=W, where 1=½ and r=½, or Lis selected from among Fe, Cr and Ga in combination with R=Nb, Ta or Sb, where 1=½ and r=½, or Lis selected from among Fe, Cr and Ga in combination with R=W, where 1=⅔ and r=⅓.