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:
Jun. 17, 2008
Filed:
Sep. 20, 2002
Gunter Helke, Lauf-Heuching, DE;
Gunter Helke, Lauf-Heuching, DE;
CeramTec AG, Plochingen, DE;
Abstract
The invention relates to piezoelectric ceramic materials based on the system Pb(Zr,Ti)O, i.e. solid solutions of lead zirconate PbTO, characterized by having very good dielectric and electromechanical properties that can be adopted for different uses by modifying the composition. The piezoelectric ceramic materials based on the system Pb(Zr,Ti)Oare modified in order to obtain a high level of piezoelectric activity. The invention provides piezoelectric ceramic materials based on lead zirconate titanate (PZT) having the crystal structure of perovskite with formula ABO, which are characterized by a substitution of heterovalent acceptor and donator ions at Zr/Ti sites.