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:
Aug. 23, 1988
Filed:
Dec. 23, 1986
Nippon Soken, Inc., Nishio, JP;
Abstract
A piezoelectric ceramic material composed of a ternary solid solution of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3 - PbTiO.sub.3 - PbZrO.sub.3 having the composition within an area encircled by lines connecting points A(15 mol % of Pb(Ni.sub.1/3 Nb.sub.170 )O.sub.3, 45 mol % of PbTiO.sub.3 and 40 mol % of PbZrO.sub.3), F(40 mol % of Pb(Ni.sub.166 Nb.sub.2/3)O.sub.3, 30 mol % of PbTiO.sub.3 and 30 mol % of PbZrO.sub.3), C(51 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 24 mol % of PbTiO.sub.3 and 25 mol % of PbZrO.sub.3), G(45 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 35 mol % of PbTiO.sub.3 and 20 mol % of PbZrO.sub.3), H(40 mol % of Pb(Ni.sub.1/3 Nb.sub.170 )O.sub.3, 40 mol % of PbTiO.sub.3, and 20 mol % of PbZrO.sub.3) and I(30 mol % of Pb(Ni.sub.1/3 Nb.sub.2/3)O.sub.3, 45 mol % of PbTiO.sub.3 and 25 mol % PbZrO.sub.3). And at least one additive selected from the group consisting of Sb.sub.2 O.sub.3, Nb.sub.2 O.sub.5, Bi.sub.2 O.sub.3, La.sub.2 O.sub.3, WO.sub.3 is added to the ternary solid solution in an amount of 0.1 to 1.0 weight % of the ternary solid solution.