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:
Apr. 18, 2023
Filed:
Mar. 27, 2020
Taiyo Yuden Co., Ltd., Tokyo, JP;
Tomohiro Harada, Takasaki, JP;
Takayuki Goto, Takasaki, JP;
Ryo Ito, Takasaki, JP;
Hiroyuki Shimizu, Takasaki, JP;
Sumiaki Kishimoto, Takasaki, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A multilayer piezoelectric ceramic is constituted by: piezoelectric ceramic layers which do not contain lead as a constituent element, have a perovskite compound expressed by the composition formula LiNaKNbO(where 0.02<x≤0.1, 0.02<x+y≤1) as the primary component, and contain 0.2 to 3.0 mol of Li relative to 100 mol of the primary component; and internal electrode layers which are constituted by a metal that contains silver by 80 percent by mass or more; wherein the multilayer piezoelectric ceramic is such that Li compounds other than the primary component are localized therein. The multilayer piezoelectric element can offer excellent insulating property.