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:
Sep. 17, 2002
Filed:
Dec. 28, 1999
Keiji Kusumoto, Aichi, JP;
Tadashi Sekiya, Aichi, JP;
Abstract
The present invention is intended to provide piezoelectric ceramic materials having far better strain characteristics than that of conventional piezoelectric ceramics, as well as a novel method for producing such piezoelectric ceramics, and the present invention involves solid solution piezoelectric ceramics primarily comprising the complex perovskite compound Pb(Ni Nb )O , the simple perovskite compound PbTiO , and PbZrO , wherein the aforementioned ceramics primarily comprise compositions within a triangle in which the compositional vertices are (X=52, Y=34, Z=14), (X=49, Y=37, Z=14), and (X=49, Y=34, Z=17), where Pb(Ni Nb )O is X mol %, PbTiO is Y mol %, and PbZrO is Z mol % (X+Y+Z=100) among the triangular coordinates in the phase diagram in which the vertices are Pb(Ni Nb ) O , PbTiO , and PbZrO , as well as a method for producing such solid solution ceramics.